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DENR Administrative Order 2008 - XX Water Quality Guidelines and General Effluent Standards

Draft – Not for quotation or distribution. 1

DENR Administrative Order 1 No. 2008 - XX 2 3 4

SUBJECT: Water Quality Guidelines and General Effluent Standards of 5 2008, Revising DAO 34 and 35, Series of 1990 6

7 8 Pursuant to Section 19e and 19f of the Republic Act 9275, otherwise known as the 9 Philippine Clean Water Act of 2004, the Department of Environment and Natural 10 Resources (DENR) hereby adopts and promulgates these Water Quality Guidelines 11 and General Effluent Standards. 12

13

Section 1.0 Title 14 15 These rules and regulations shall be known as the "Water Quality Guidelines 16 (WQG) and General Effluent Standards (GES) of 2008". 17 18

Section 2.0 Scope and Coverage 19 20 The WQG applies to all water bodies in the country, inland surface water, marine 21 waters, and groundwater; and shall be used for classifying water bodies, 22 determining time trends, evaluating stages of deterioration or enhancement in 23 water quality, and as basis for taking positive actions in preventing, controlling, or 24 abating water pollution. Moreover, this WQG shall be used in designating non-25 attainment areas (NAA). 26 27 The GES applies to all point sources of pollution discharged to all water bodies in 28 the country. Until such time that industry-specific standards are promulgated, the 29 GES shall be used regardless of the industry category. 30 31

Section 3.0 Definition of Terms 32 33 For the purposes of this Administrative Order, the following terms and acronyms 34 shall have the following meanings: 35 36 "Acute Toxicity" means lethal or sub lethal severe adverse effect(s) to an organism 37 when exposed to a toxic pollutant(s) for a relatively short period of time. In aquatic 38 toxicity tests, an effect observed in 96 hours or less is typically considered acute. 39 40 “Aesthetic Value” means freedom from visible materials that will settle to form 41 objectionable deposits, floating debris, oil, scum, and other matter; substances 42 producing objectionable color, odor, taste, or turbidity; and substances and 43 conditions that produce undesirable aquatic life. “Excellent aesthetic value” implies, 44 not only absence or natural levels of aesthetic pollutants, but also conformance of 45 observed values with the numerical criteria prescribed for the aesthetic parameters 46 under Class AA, Class A, and Class SA. Similarly, “very good aesthetic value” or 47 “good aesthetic value” implies, not only the presence of aesthetic pollutants to a 48 certain extent, but also conformance of observed values for the aesthetic 49



parameters with the numerical criteria prescribed for them under Class B and 1 Class SB or Class C and Class SC, respectively. 2 3 “Aquatic Life” means all organisms living in freshwater, brackish, and marine 4 environments. 5 6 “Aquifer” refers to layer of water-bearing rock located underground that transmits 7 water in sufficient quantity to supply pumping wells or natural springs. 8 9 “Beneficial Use” means the use of the environment or any element or segment 10 thereof, conducive to public or private welfare, safety and health; and shall include, 11 but not limited to, the use of water for domestic, municipal, irrigation, power 12 generation, fisheries, livestock raising, industrial, recreational, and other purposes. 13 14 "Brackish Water" means those waters in which the natural level of salinity is 15 greater than one half (0.5) part per thousand (ppt) but less than 30 ppt, 95 percent 16 or more of the time. 17 18 "Chronic Toxicity" means lethal or sub lethal adverse effect(s) to an organism or 19 its progeny, based on various physiological measurements including but not limited 20 to growth, survival, or reproductive success when exposed to a toxic pollutant(s) for 21 a relatively long period of time. The methods commonly used to estimate chronic 22 effects involve exposures of typically four (4) days or more. 23 24 “Classification/Reclassification of Philippine Waters” refers to the 25 categorization of all water bodies taking into account, among others, the following: 26 (1) existing quality of the water body; (2) size, depth, surface area covered, volume, 27 direction, rate of flow, and gradient of stream; (3) most beneficial existing and 28 future use of said bodies of water and lands bordering them, such as for residential, 29 agricultural, aquacultural, commercial, industrial, navigational, recreational, 30 wildlife conservation, and aesthetic purposes; and (4) vulnerability of surface and 31 groundwater to contamination from pollutive and hazardous wastes, agricultural 32 chemicals, and underground storage tanks of petroleum products. 33 34 “Clean-up Operations” refer to activities involving the removal of pollutants 35 discharged or spilled into a water body and its surrounding areas, and the 36 restoration of the affected areas to their former physical, chemical, and biological 37 state or conditions. 38 39 "Clean Water Act (CWA)" refers to Republic Act 9275 also known as the Philippine 40 Clean Water Act of 2004. 41 42 “Commercial Fishing” means the taking of fishery species by passive or active 43 gear for trade, business, or profit beyond municipal, subsistence, or sports fishing. 44 It is further classified based on size of fishing vessels into small scale (3.1 gross 45 tons (GT) up to 20 GT vessels), medium scale (20.1 GT up to 150 GT vessels), and 46 large-scale commercial fishing with more than 150 GT fishing vessels. 47 48 “Contamination” refers to the introduction of substances not found in the natural 49 composition of water that make the water less desirable or unfit for intended use. 50 51 “Department” refers to the Department of Environment and Natural Resources. 52



1 “Discharge” includes, but is not limited to, the act of spilling, leaking, pumping, 2 pouring, emitting, emptying, releasing, or dumping of any material into a water 3 body or onto land from which it might flow or drain into said water. 4 5 “Drinking Water” refers to water intended for human consumption or for use in 6 food preparation. 7 8 “Dumping” means any unauthorized or illegal disposal into any body of water or 9 land of wastes or toxic or hazardous material: Provided, that it does not mean a 10 release of effluent coming from commercial, industrial, and domestic sources, 11 which are within the effluent standards. 12 13 “Ecotourism” is a form of sustainable tourism within a given natural and/or 14 cultural area where community participation, conservation, and management of 15 biodiversity, respect for culture and indigenous knowledge systems and practices, 16 environmental education and ethics as well as economic benefits are fostered and 17 pursued for the enrichment of host communities and satisfaction of visitors. 18 19 “Effluent” refers to discharges from known source, which is passed into a body of 20 water or land, or wastewater flowing out of a manufacturing plant, industrial plant 21 including domestic, commercial, and recreational facilities. 22 23 “Effluent Standards” refer to any legal restriction or limitation on quantities, rates, 24 and/or concentrations or any combination thereof, of physical, chemical, or 25 biological parameters of effluent, which a person or point source is allowed to 26 discharge into a body of water or land. 27 28 "Fish and Other Wildlife" means birds, fish, shellfish, mammals, and all other 29 classes of wild aquatic and land organisms and all types of vegetation upon which 30 they are dependent, including all indigenous species. 31 32 “Flowrate-based Effluent Standards” are standards based on the volume of 33 effluent discharges. 34 35 “Freshwater” refers to water containing less than 500 mg/L dissolved common 36 salt, sodium chloride, such as that in groundwater, rivers, ponds, and lakes. 37 38 “Geometric Mean” is the nth root of the product of a series of n numbers. It is a 39 calculation to determine an average when the set of numbers covers a wide range. 40 Results of bacteriological testing often cover such a large range. 41 42 “Groundwater” refers to subsurface water that occurs beneath a water table in 43 soils and rocks, or in geological formations. 44 45 “Hazardous Waste” means any waste or combination of wastes of solid, liquid, 46 contained gaseous, or semi-solid form which cause, or contribute to, an increase in 47 mortality or an increase in serious irreversible, or incapacitating reversible illness, 48 taking into account toxicity of such waste, its persistence and degradability in 49 nature, its potential for accumulation or concentration in tissue, and other factors 50 that may otherwise cause or contribute to adverse acute or chronic effects on the 51 health of persons or organism. 52



1 “Inland Water” refers to interior body of water or watercourse such as lakes, 2 reservoirs, rivers, streams, creeks, etc., that has beneficial usage other than public 3 water supply or primary contact recreation. Tidal affected rivers or streams are 4 considered inland waters for purposes of these regulations. 5 6 “Lake” refers to inland body of water, an expanded part of a river, a reservoir 7 formed by a dam, or a lake basin intermittently or formerly covered by water. 8 9 “Marine Waters” means those of the ocean that lies beyond the limit of coastal 10 waters and have natural salinity levels of not less than 30 ppt, 95 percent or more 11 of the time. It is synonymous to saline water, or euhaline seas. 12 13 “Maximum Allowable Concentration” refers to the concentration of a pollutant in 14 water without causing harmful effects to human and aquatic organisms. 15 16 “Non-point Source” means any source of pollution not identifiable to as point 17 source to include, but not limited to, runoff from irrigation or rainwater that picks 18 up pollutants from farms and urban areas. 19 20 “Percentile” is the value of a variable below which a certain percent of 21 observations fall. Therefore, the 80th percentile is the value (or score) below which 22 80 percent of the observations may be found. 23 24 “Philippine Waters” include all water bodies within the Philippine territory such 25 as lakes, rivers, streams, creeks, brooks, ponds, swamps, lagoons, gulfs, bays, and 26 seas and other bodies of water now existing or which may hereafter exist in the 27 provinces, cities, municipalities, and barangays and the waters around, between, 28 and connecting the islands of the archipelago regardless of their breadth and 29 dimensions, the territorial sea, the sea beds, the insular shelves, and all other 30 waters over which the Philippines has sovereignty and jurisdiction including the 31 200-nautical miles Exclusive Economic Zone and the continental shelf. 32 33 “Point Source” means any identifiable source of pollution with specific point of 34 discharge into a particular water body. 35 36 “Pollutant” refers to any substance, whether solid, liquid, gaseous, or radioactive; 37 which directly or indirectly: 38 (i) Alters the quality of any segment of the receiving water body so as to affect or 39

tend to affect adversely any beneficial use thereof 40 (ii) Is hazardous or potentially hazardous to health 41 (iii) Imparts objectionable odor, temperature change, or physical, chemical, or 42

biological change to any segment of the water body 43 (iv) Is in excess of the allowable limits or concentrations or quality standards 44

specified, or in contravention of the condition, limitation, or restriction 45 prescribed in this Act. 46

47 "Pollution" means the man-made or man-induced alteration of the physical, 48 chemical, biological, or radiological characteristics and/or integrity of water. 49 50



“Pollution Load” refers to the amount of pollutant being discharged into the 1 environment, which is actually the product of the effluent quality or concentration 2 and the volumetric rate of discharge. 3 4 “Potable Water” refers to water that is free of microorganisms or disease-5 producing bacteria. In addition, the water should not possess undesirable taste, 6 odor, color, levels of radioactivity, turbidity, or chemicals; and it should pass the 7 standards of the PNSDW. 8 9 “Primary Contact Recreation” refers to any form of recreation, where there is 10 intimate contact of the human body with water, such as swimming, water skiing, or 11 skin diving. 12 13 “Primary Water Quality Parameters” are the required minimum parameters to be 14 monitored for each water body. They shall be monitored on a monthly basis. 15 16 “Protected Water” refers to a watercourse or a body of water, or any segment 17 thereof, that is classified as a source of public water supply, propagation and 18 harvesting of shellfish for commercial purposes, or spawning areas for 19 Chanoschanos and similar species, or primary contact recreation, or that which is 20 designated by competent government authority or by legislation as tourist zone, 21 national marine park and reserve, including coral reef park and reserve. 22 23 "Public Drinking Water Supply" means the source of water for a public drinking 24 water supplier. 25 26 “Reservoir” refers to pond, lake, or basin, either natural or artificial, designed for 27 storage, regulation, and control of water. 28 29 “Secretary” refers to the Secretary of the Department of Environment and Natural 30 Resources. 31 32 "Secondary Contact Recreational Activities" means any recreational activities, 33 such as boating and fishing, in which there is minimal contact by the human body 34 with the water, and the probability of ingestion of the water is minimal. 35 36 “Secondary Water Quality Parameters” are other water quality parameters that 37 shall be used in baseline assessment as part of the Environmental Impact 38 Assessment and other water quality monitoring purposes. 39 40 “Significant Effluent Quality Parameters” are parameters specific to the 41 processes of an industry or specific to the quality of a discharge point. 42 43 “Strong Wastewater” refers to wastewater whose initial BOD value before 44 treatment is equal to or greater than 3,000 mg/L. 45 46 “Surface Water” refers to waters, which are open to the atmosphere and subject to 47 surface runoff. 48 49 “Toxic Amount” is the lowest amount of concentration of toxic pollutants which 50 may cause chronic or long-term acute or lethal conditions or effects to the aquatic 51 life or health of persons or which may adversely affect designated water uses. 52



1 "Toxicity" refers to the chemical, biological, or biochemical adverse effect(s) of a 2 pollutant or combination of pollutants on organisms. 3 4 “Treatment” refers to any method, technique, or process designed to alter the 5 physical, chemical, biological, or radiological character or composition of any waste 6 or wastewater to reduce or prevent pollution. 7 8 “Use of Water for Domestic Purposes” is the utilization of water for drinking, 9 washing, bathing, cooking, or other household needs, home gardens and watering 10 of lawns or domestic animals. 11 12 “Use of Water for Fisheries” is the utilization of water for the propagation or 13 culture of fish as a commercial enterprise. 14 15 “Use of Water for Industrial Purposes” is the utilization of water in factories, 16 industrial plants, and mines, including the use of water as an ingredient of a 17 finished product. 18 19 “Use of Water for Irrigation” is the utilization of water for producing agricultural 20 crops. 21 22 “Use of Water for Livestock Raising” is the utilization of water for large herds or 23 flocks of animals raised as a commercial enterprise. 24 25 “Use of Water for Municipal Purposes” is the utilization of water for supplying 26 water requirements of the community. 27 28 “Use of Water for Power Generation” is the utilization of water for producing 29 electrical or mechanical power. 30 31 “Use of Water for Recreational Purposes” is the utilization of water for swimming 32 pools, bath houses, boating, water skiing, golf courses, and other similar facilities 33 in resorts and other places of recreation. 34 35 “Waste” refers to any material in solid, liquid, semisolid, contained gas, or other 36 forms resulting from industrial, commercial, mining, or agricultural operations, or 37 from community and household activities that is devoid of usage and discarded. 38 39 “Wastewater” refers to waste in liquid state containing pollutants. Also called 40 sewage. 41 42 “Water Body” means both natural and man-made bodies of fresh, brackish, and 43 saline waters, and includes, but is not limited to, aquifers, groundwater, springs, 44 creeks, streams, rivers, ponds, lagoons, water reservoirs, lakes, bays, estuarine, 45 coastal and marine waters. Water bodies do not refer to those constructed, 46 developed, and used purposely as water treatment facilities and/or water storage 47 for recycling and re-use, which are integral to process industry or manufacturing. 48 49 “Water Pollution” refers to any alteration of the physical, chemical, biological, or 50 radiological properties of a water body resulting in the impairment of its purity or 51 quality. 52



1 “Water Quality” refers to the characteristics of water, which define its use in terms 2 of physical, chemical, biological, bacteriological, or radiological characteristics by 3 which the acceptability of water is evaluated. 4 5 “Water Quality Guidelines (WQG)” refer to the level for a water constituent or 6 numerical values of physical, chemical, biological, bacteriological, or radiological 7 parameters which are used to classify water bodies and their use, which does not 8 result in significant health risk and which are not intended for direct enforcement 9 but only for water quality management purposes, such as determining time trends, 10 evaluating stages of deterioration, or enhancement of the water quality, and as 11 basis for taking positive action in preventing, controlling, or abating water pollution. 12 13 "Water Quality Non-attainment Area" means any segment of a surface water body 14 where the water quality does not meet applicable water quality criteria, and is not 15 expected to meet applicable WQG, even after the application of the technology-16 based effluent limitations required by the CWA. 17 18

Section 4.0 Classification of Water Bodies 19 20 For the purposes of maintaining water quality according to its intended beneficial 21 usage, the following classification of water bodies shall be adopted (see Tables 4-1 22 to 4-3). 23 24

Table 4-1 Revised Water Classification and Usage of Inland Surface Waters 25 26

Classification Intended Beneficial Use

Class AA Public Water Supply Class I – Intended primarily for waters having watersheds which are uninhabited and/or otherwise declared as protected areas and which require only approved disinfection to meet the latest PNSDW of the Philippines

Class A Public Water Supply Class II – Intended as sources of water supply requiring conventional treatment (coagulation, sedimentation, filtration and disinfection) to meet the PNSDW

Class B Recreational Water Class I – Intended for primary contact recreation (bathing, swimming, etc.)

Class C 1. Fishery Water for the propagation and growth of fish and other aquatic resources

2. Recreational Water Class II – For boating, fishing, or similar activities

3. For agriculture, irrigation, and livestock watering Class D 1. Industrial Water Supply – For Manufacturing processes

after treatment, cooling, etc.) 2. Navigation and other similar uses

27 28

Table 4-2 Revised Water Classification and Usage of Marine Waters 29 30


Class SA 1. Protected Waters – Waters designated as national or local marine parks, reserves, sanctuaries, and other areas




established by law (Presidential Proclamation 1801 and other existing laws), and/or declared as such by appropriate government agency, LGUs, etc

2. Fishery Water Class I – Suitable for shellfish harvesting for direct human consumption

Class SB 1. Fishery Water Class II – Waters suitable for commercial propagation of shellfish and intended as spawning areas for milkfish and similar species

2. Tourist Zones – For ecotourism and recreational activities 3. Recreational Water Class I – Intended for primary contact

recreation (bathing, swimming, skin diving, etc.) Class SC 1. Fishery Water Class III – For the propagation and growth

of fish and other aquatic resources and intended for commercial and sustenance fishing

2. Recreational Water Class II – For boating, fishing, or similar activities

3. Marshy and/or mangrove areas declared as fish and wildlife sanctuaries

Class SD 1. Industrial Water Supply – For manufacturing processes after treatment, cooling, etc.)

2. Navigation and other similar uses 1

Section 5.0 Water Quality Guidelines 2 3 The rules and regulations established in this section are intended to maintain and 4 preserve the quality of all water bodies based on their intended beneficial usage 5 and to prevent and abate pollution and contamination to protect public health, 6 aquatic resources, crops, and other living organisms. 7 8

5.1 Guidelines for Surface Water Quality (Inland and Marine) 9 10 All surface waters of the country shall be free from: 11

1) Domestic, industrial, agricultural, or other man-induced non-thermal 12 components of discharges, alone or in combination with other substances or 13 in combination with other components of discharges (whether thermal or 14 non-thermal), which: 15

a) Settle to form putrescent deposits or otherwise create a nuisance 16

b) Float as debris, scum, oil, or other matter in such amounts as to form 17 nuisance 18

c) Produce color, odor, taste, turbidity, or other conditions in such 19 degree as to create a nuisance 20

d) Are acutely toxic 21



e) Are present in concentrations which are carcinogenic, mutagenic, or 1 teratogenic to human beings or to significant, locally occurring wildlife 2 or aquatic species 3

f) Pose a serious danger to the public health, safety, or welfare 4

2) Thermal components of discharges, alone or in combination with other 5 discharges or components of discharges (whether thermal or non-thermal), 6 which: 7

a) Produce conditions so as to create nuisance 8

b) Increase the temperature of the receiving water body to cause 9 substantial damage or harm to the aquatic life or vegetation therein, 10 or interfere with the designated beneficial uses. 11

12 The WQG provided for in Tables 5-1 to 5-4 shall be maintained for each water body 13 classification. For the purpose of this Administrative Order, the parameters 14 defining the WQG are categorized into two: primary and secondary parameters. 15 16 Whereas, primary parameters (Table 5-1) are the required minimum parameters to 17 be monitored on a monthly basis. Secondary parameters (Tables 5-2 to 5-4) are 18 other water quality parameters that shall be used in baseline assessment as part of 19 the Environmental Impact Assessment and other water quality monitoring 20 purposes. For new WQG parameters, implementation is within 3 years from the 21 effectivity of this Administrative Order. 22 23 24



1 Table 5-1 Water Quality Guidelines for Primary Parameters 2

3 Water Body Classification Parameter Unit

AA A B C D SA SB SC SD

BOD mg/L 1 3 5 7 15 n/a n/a n/a n/a Chloride mg/L 250 250 250 350 400 n/a n/a n/a n/a Color (True) TCU 5 50 50 75 150 5 50 75 150

Dissolved Oxygen(a) (minimum)

mg/L 5 5 5 5 2 7 7 5 2

Fecal Coliform MPN/100mL <2 <2 150 200 400 <2 150 200 400 Nitrate as NO3-N mg/L 7 7 7 7 15 10 10 10 15 pH Range 6.5-8.5 6.5-8.5 6.5-8.5 6.5-9.0 6.0-9.0 7.0-8.5 7.0-8.5 6.5-8.5 6.0-9.0 Phosphate mg/L <0.003 0.5 0.5 0.5 5 0.1 0.5 0.5 5 Temperature oC 26-30 26-30 26-30 25-31 25-32 26-30 26-30 25-31 25-32 Total Suspended Solids mg/L 25 50 65 80 110 25 50 80 110

4 Notes: 5

(a) Samples shall be taken between 9:00AM to 4:00PM. 6 7



1 Table 5-2 Water Quality Guidelines for Secondary Parameters-Inorganics 2

Water Body Classification Parameter Unit AA A B C D SA SB SC SD

Ammonia as NH3-N mg/L 0.05 0.05 0.05 0.05 0.75 0.04 0.05 0.05 0.75 Barium(a) mg/L 0.7 0.7 0.7 3 4 0.1 0.7 1 4 Boron(a) mg/L 0.5 0.5 0.5 0.75 3 0.5 0.5 5 20 Fluoride mg/L 1 1 1 1 2 1.5 1.5 1.5 3 Iron(a) mg/L 1 1 1 1.5 7.5 1.5 1.5 1.5 7.5 Sulfate(a) mg/L 250 250 250 300 500 250 250 300 500

3 Notes: 4

(a) If the natural level exceeds the guideline, then the natural level concentration prevails provided that the 5 maximum increase in concentration is only up to 10 percent from the natural concentration. 6

7



1 Table 5-3 Water Quality Guidelines for Secondary Parameters-Toxic Metals(a,b) 2


AA A B C D SA SB SC SD Arsenic mg/L 0.01 0.01 0.01 0.02 0.04 0.01 0.01 0.02 0.04 Cadmium mg/L 0.003 0.003 0.003 0.005 0.01 0.003 0.003 0.005 0.01 Chromium as Cr+6 mg/L 0.01 0.01 0.01 0.01 0.02 0.05 0.05 0.05 0.1 Copper as dissolved Copper

mg/L 0.02 0.02 0.02 0.02 0.04 0.02 0.02 0.02 0.04

Lead mg/L 0.01 0.01 0.01 0.05 0.1 0.01 0.01 0.05 0.1 Manganese mg/L 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 2 Mercury mg/L 0.001 0.001 0.001 0.002 0.004 0.001 0.001 0.002 0.004 Nickel mg/L 0.02 0.02 0.04 0.2 1 0.02 0.04 0.06 0.3 Zinc mg/L 2 2 2 2 4 0.04 0.05 0.8 1.5

4 Notes: 5

(a) Unless otherwise specified, the above parameters are expressed as total metals 6 (b) If the natural level exceeds the guideline, then the natural level concentration prevails provided that the 7

maximum increase in concentration is only up to 10 percent from the natural concentration. 8 9



1 Table 5-4 Secondary Water Quality Guidelines for Secondary Parameters-Organics 2


AA A B C D SA SB SC SD Animal-Vegetable Fat and Oil (AVFO)

mg/L <0.2 <0.2 1 2 5 <0.2 1 2 5

Benzo(a)pyrene (PAH) µg/L 0.7 0.7 0.7 1.5 3 0.01 0.7 1.5 3 BTEX Benzene mg/L 0.01 0.01 0.01 0.05 0.5 0.01 0.01 0.05 0.5 Toluene mg/L 0.7 0.7 1 4 5 1 1 4 5 Ethylbenzene mg/L 0.3 0.3 0.3 1.5 2 0.2 0.2 1.5 2 Xylene mg/L 0.5 0.5 0.5 1.5 1.8 0.5 0.5 1.5 1.8 Cyanide (Free) mg/L 0.07 0.07 0.07 0.1 0.2 0.02 0.02 0.1 0.2 Malathion (Organophosphate)

µg/L 1 1 1 3 6 1 1 3 6

PCBs(a) µg/L <0.1 <0.1 0.2 0.5 1 0.3 0.3 0.5 1 Petroleum Oil mg/L <0.2 <0.2 <0.2 <0.2 1 <0.2 <0.2 <0.2 1 Phenol & Phenolic Substances(b)

mg/L <0.001 <0.001 <0.001 0.05 0.5 <0.001 <0.001 0.05 0.5

Surfactants (MBAS) mg/L <0.01 0.2 0.3 1.5 3 0.3 0.3 1.5 3 Trichloroethylene mg/L 0.07 0.07 0.07 0.9 2 0.07 0.07 0.9 2 Total Organochlorine Pesticides (c)

µg/L n/a n/a 50 50 50 50 50 50 50

Aldrin µg/L 0.03 0.03 n/a n/a n/a n/a n/a n/a n/a Chlordane µg/L 0.2 0.2 n/a n/a n/a n/a n/a n/a n/a DDT µg/L 1 1 n/a n/a n/a n/a n/a n/a n/a Dieldrin µg/L 0.03 0.03 n/a n/a n/a n/a n/a n/a n/a Endrin µg/L 0.6 0.6 n/a n/a n/a n/a n/a n/a n/a




Heptachlor µg/L 0.03 0.03 n/a n/a n/a n/a n/a n/a n/a Lindane µg/L 2 2 n/a n/a n/a n/a n/a n/a n/a Methoxychlor µg/L 50 50 n/a n/a n/a n/a n/a n/a n/a Toxaphene µg/L 4 4 n/a n/a n/a n/a n/a n/a n/a

1 Notes: 2

(a) PCBs are a class of chemicals, which include aroclors, 1242, 1254, 1221, 1232, 1248, 1260, and 1016, CAS 3 numbers 53469219, 11097691, 11104282, 11141165, 12672296, 11096825, and 12674112 respectively. 4 The WQG applies to this set of PCBs. 5

(b) Phenolic substances include 2chlorophenol, 2,4dichlorophenol, and 2,4,6trichlorophenol 6 (c) When monitoring for Class AA and A waters, the individual organochlorine pesticides shall be monitored. 7

For Class B, C, D, SA, SB, SC, and SD, Total Organochlorine Pesticides (TOPs) shall be monitored, which 8 refers to the organochlorine pesticides listed in Table 5-4 plus BHC (,β, , γ), 4,4’DDD, 4,4’DDE, Endosulfan 9 (I, II, and sulfate). 10

11 12



5.2 Guidelines for Groundwater Quality 1 2 Groundwater in the country generally are potable sources of drinking water without 3 the necessity of significant treatment. It is the intent of this Administrative Order 4 to protect the overall high quality of the country’s groundwater to the level 5 established by these groundwater quality guidelines and to enhance and restore 6 the quality of degraded groundwaters where feasible and necessary to protect 7 human health and the environment, or to ensure their suitability as a future 8 source of drinking water. 9 10 In line with this objective, the following are the minimum guidelines for protecting 11 and preserving groundwaters: 12 13

1) Groundwater shall be maintained at a quality consistent with its intended 14 beneficial usage 15

2) Groundwater shall be free from discharge of any pollutant. No discharges of 16 any pollutant shall be allowed to areas where groundwater is intended as 17 source of drinking water 18

3) No facility shall be allowed to operate in a manner that may result in a 19 discharge of any pollutant to groundwater that may alter its intended 20 beneficial usage 21

4) No solid waste landfills or facilities that are to be used as treatment, storage, 22 and/or transfer areas or disposal facilities of hazardous waste shall be 23 established within the areas where the groundwater is designated as supply 24 of drinking water and where public water is not available to all surrounding 25 properties 26

27 For the purposes of preserving and protecting groundwater quality for its intended 28 beneficial usage, the WQG set forth in Table 5-5 shall be maintained. 29 30

Table 5-5 Groundwater Quality Guidelines 31 32

Intended Beneficial Use Groundwater Quality Guidelines Source of potable drinking water and other domestic use

Adopt Class AA WQG

Bathing and Other Primary Contact Recreation

Adopt Class B WQG

Irrigation, Fish Culture, Livestock Watering

Adopt Class C WQG

Industrial Use Adopt Class D WQG

33

5.3 Important Considerations 34 35 In as much as the WQG are set regardless of the carrying capacity of the water 36 bodies, and to ensure that carrying capacities are not exceeded, the WQG set forth 37 in Tables 5-1 to 5-4 are: 38



1) 80th percentile of at least 10 monthly data for primary parameters except for 1 DO, pH, temperature, and secondary inorganic parameters 2

2) 20th percentile of at least 10 monthly data for DO 3

3) Range between 20th and 80th percentile for pH and temperature of at least 10 4 monthly data 5

4) Geometric mean of at least 10 data sets for fecal coliform 6

5) Maximum allowable limit for secondary toxic metals and organic parameters 7 8

5.4 Anti-degradation and Clean-up Policy 9 10 If the concentration of any parameters set forth in this WQG exceeds the numerical 11 limits for that particular parameter, no addition of that constituent to the naturally 12 occurring concentration shall be made. 13 14 Variance to this policy shall not be made unless it can be affirmatively 15 demonstrated that a change is justifiable to provide necessary economic or social 16 development, that the degree of waste treatment necessary to preserve the existing 17 quality cannot be economically or socially justified, and that the present and 18 anticipated uses of such water will be preserved and protected. 19 20

Section 6.0 General Effluent Standards 21 22 Effluent discharges from any point sources shall at all times meet the effluent 23 standards set forth in Tables 6-1 to 6-3 of this Administrative Order to maintain 24 the required water quality per water body classification. Until such time that 25 industry-specific standards are promulgated, the GES laid out in this 26 Administrative Order shall be enforced. 27 28

6.1 Significant Effluent Quality Parameters per Sector 29 30 For the purposes of streamlining compliance and enforcement of the GES, the 31 significant effluent quality parameters per sector to be considered for monitoring 32 purposes are indicated in Table 6-1. 33 34

Table 6-1 Significant Effluent Quality Parameters per Sector 35

PSIC Code Industry Category Significant Parameters

0210 Hog farming Color, Temp, pH, BOD, TSS, Nitrate, Chloride, Phosphate, Fecal Coliform, Total Coliform

029 Animal Farming including sericulture, vermi culture, frog farming, rabbit farming, crocodile/alligator farming, etc.

Color, Temp, pH, BOD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Fecal Colifrom, Total Coliform, AVFO

063 Prawn culture and farming Color, Temp, pH, BOD, TSS, Nitrate, Ammonia-Nitrogen, Sulfate

064 Operation of fish farms and nurseries Color, Temp, pH, BOD, TSS, Nitrate,




Ammonia-Nitrogen, Phosphate, Sulfate

065 Mollusks and other crustacean farm operations (except prawn farm operations)

Color, Temp, pH, BOD, TSS, Nitrate, Ammonia-Nitrogen, Sulfate

1010 Gold ore mining and processing Color, Temp, pH, TSS, Arsenic, Cadmium, Cyanide, Lead, Mercury

1020 Copper ore mining and processing Color, Temp, pH, TSS, Arsenic, Cadmium, Cyanide, Lead, Mercury, Copper

1030 Chromite ore mining Color, pH, TSS, Arsenic Cadmium, Chromium, Lead, Mercury

1091 Iron ore mining Color, pH, TSS, Arsenic, Cadmium, Lead, Iron

1092 Manganese ore mining Color, pH, TSS, Arsenic, Cadmium, Lead, Manganese

Nickel ore mining Color, pH, TSS, Arsenic, Cadmium, Lead, Nickel

1093

Nickel processing Color, Temp, pH, TSS, Arsenic, Cadmium, Lead, Nickel

Non-metallic mining and quarrying pH, Color, TSS 1100 Coal Mining Color, Temp, pH, TSS, Arsenic,

Cadmium, Mercury, Lead 1511 Slaughtering and meat packing

(without processing) Temp, pH, BOD, TSS, Nitrate, Ammonia-Nitrogen, Fecal Coliform, AVFO

1512 Production, processing and preservation of meat and meat products

Temp, pH, BOD, TSS, Nitrate, Chloride, Phosphate, AVFO

15131 Canning/packing of fish and other marine products

Color, Temp, pH, BOD, TSS, Nitrate, AVFO

15132 Drying of fish and other marine products

Color, Temp, pH, BOD, TSS, AVFO

15133 Smoking of fish and other marine products


15134 Manufacture of fish paste (bagoong) and sauce (patis)


15135 Processing of seaweeds; manufacture of agar-agar or carageenan

Color, Temp, pH, COD, TSS, AVFO

15136 Production of fishmeal/prawn feeds Color, Temp, pH, BOD, TSS, AVFO 15137 Manufacture of unprepared animal

feeds from fish, crustaceans, and mollusks, and other aquatic animals


15139 Processing, preserving, and canning of fish, crustacean, and other sea foods, n.e.c.

Color, Temp, pH, TSS, Ammonia-Nitrogen

1514 Processing and preserving of fruits and vegetables

Color, Temp, pH, BOD, COD, TSS




1515 Manufacture of vegetable and animal oils and fats (oil refining)

Color, Temp, pH, COD, TSS AVFO

152 Manufacture of dairy products Color, Temp, pH, BOD, TSS, Nitrate, AVFO

1541 Manufacture of starches and starch products

Color, Temp, pH, COD, TSS, Nitrate

1542 Production of prepared animal feeds Color, Temp, pH, BOD, TSS, Nitrate, Ammonia-Nitrogen

1543 Manufacture of grain and vegetable mill products, except rice and corn

Color, Temp, pH, BOD, TSS, Nitrate, Ammonia-Nitrogen

1551 Distillery including Ethyl Alcohol Production from Fermented Materials

Color, Temp, pH, BOD, TSS, Nitrate

1552 Manufacture of wines and spirits Color, Temp, pH, COD, TSS, Ammonia-Nitrogen

1553 Manufacture of malt liquors such as beer (brewery), ale, porter and stout including malt manufacturing

Color, Temp, pH, BOD, TSS, Nitrate

1554 Manufacture of softdrinks and other beverages (Alcoholic or non-alcoholic)

Color, Temp, pH, BOD, TSS

1555 Production of Drinking Water (bottling)

pH, BOD, TSS

156 Manufacture of bakery products BOD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, AVFO

157 Sugar milling and refining including muscovado

Color, Temp, pH, BOD, TSS, Nitrate, AVFO

1580 Production of crude oil, copra cake, meals, and pellets

Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, AVFO,

1591 Manufacture of cocoa, chocolate, and sugar confectionery

Color, Temp, pH, BOD, COD, TSS, Chloride, AVFO

1592 Manufacture of macaroni, noodles, couscous, and similar farinaceous products

Color, Temp, pH, BOD, COD, TSS, Chloride, AVFO

1593 Manufacture of desiccated coconut Color, Temp, pH, BOD, COD, TSS, Nitrate, Chloride, Ammonia-Nitrogen, AVFO, Surfactants

1594 Manufacture of "nata de coco" Color, Temp, pH, BOD, COD, TSS, Nitrate, Chloride, Ammonia-Nitrogen, AVFO, Surfactants

1595 Coffee roasting and processing Color, Temp, pH, BOD, COD, TSS 1596 Manufacture of ice, except dry ice Color, Temp, pH 1599 Manufacture of other food products

such as tea, liquid powder, infants' or dietetic foods, artificial honey, soups, vinegar, flavoring extracts and food coloring, mayonnaise, salad dressing, table salt

Color, Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, AVFO

160 Manufacture of tobacco products Color, Temp, pH, BOD, COD




171 Spinning, weaving, and finishing of textiles

Temp, pH, BOD, COD, TSS, Total Coliform, Chromium, Copper, Nickel, Zinc, Phenols, Sulfate, AVFO, Petroleum Oil

1911 Tanning and dressing of leather pH, BOD, COD, TSS, Ammonia-Nitrogen, Total Coliform, Chromium, Phenols, Sulfate, Phosphate

2011 Sawmilling and planning of wood Color, Temp, pH, BOD, COD, TSS, Sulfate, Chromium, Phenols

2012 Manufacture of veneer sheets; manufacture of plywood, laminboard, particle board, and other panels and boards

Color, Temp, pH, BOD, COD, TSS, Nitrate, Sulfate, Chromium, Phenols

210 Manufacture of paper and paper products (including paper and paperboard manufacturing and milling)

Color, Temp, pH, BOD, COD, TSS, Nitrate, Phosphate

2101 Manufacture of pulp (abaca) Color, Temp, pH, COD, TSS, Nitrate, Phenols

221 Publishing Color, Temp, pH, COD, TSS, Arsenic, Cadmium, Chromium, Lead, Mercury

222 Printing and service activities related to printing

Color, pH, BOD, COD, TSS, Cadmium, Chromium, Copper, Zinc, Petroleum Oil

2320 Manufacture of refined petroleum products

Temp, pH, COD, TSS, Phosphate, Sulfate, Cadmium, Chromium, Phenols, Petroleum Oil, BTEX, PAH

NC Extraction of Crude Petroleum and Natural Gas

pH, BOD, TSS, Sulfate, Arsenic, Cadmium, Chromium, Copper, Lead, Mercury, Nickel, Zinc, Phenols, Petroleum Oil

24111 Manufacture of inorganic acids, alkalis, and chlorine

Color, Temp, pH, COD, TSS, Chloride, Ammonia-Nitrogen, Sulfate, Barium, Cadmium, Chromium, Cyanide, Lead, Mercury, Boron, Iron, Copper, Nickel, Zinc, Manganese

24112 Manufacture of inorganic salts and compounds

Color, Temp, pH

24114 Manufacture of alcohol, except ethyl Color, Temp, pH 24115 Manufacture of organic acids and

organic compounds Color, Temp, pH, BOD, COD, TSS, Nitrate, Chloride, Ammonia-Nitrogen, Sulfate, Fluoride, Barium, Arsenic, Cadmium, Chromium, Cyanide, Lead, Mercury, Iron, Copper, Nickel, Zinc, Phenols, BTEX

24119 Manufacture of other basic chemicals, except fertilizers and nitrogen compounds

Color, Temp, pH, TSS, Nitrate




2412 Manufacture of plastics in primary forms & of synthetic rubber including polymers, and synthetic resins

Color, Temp, pH, BOD, COD, TSS, Phenols, BTEX, PAH

2421 Manufacture of fertilizers and nitrogen compounds (straight, mixed, compound or complex) including urea, nitric acid, ammonia-nitrogen, ammonium chlorides and nitrates of potassium Phosphate fertilizers included

pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Arsenic, Cadmium, Chromium, Lead, Mercury, Fluoride, Phosphate

2422 Pesticides and other agro-chemical products including insecticides, rodenticides, fungicides, and herbicides manufacturing

pH, BOD, COD, TSS, Arsenic, Chromium, Mercury, Copper, Phenols, Petroleum Oil

2423 Manufacture of paints and paint products, varnishes and similar coatings, printing inks and mastics

Color, Temp, pH, BOD, COD, TSS, Barium, Cadmium, Chromium, Lead, Mercury, Copper, Nickel, Zinc, Phenols

2424 Manufacture of pharmaceuticals (human or veterinary use), medicinal / chemicals and botanical products

pH, BOD, COD, TSS, Arsenic, Chromium, Mercury, AVFO, Phenol, Cadmium, Nitrate, Ammonia-Nitrogen, Phosphate

2425 Manufacture of soap, detergents, cleaning and polishing preparations, perfumes and toilet preparations

BOD, TSS, AVFO, Surfactants, Nitrate, Ammonia-Nitrogen, Phosphate

2429 Other chemical products not previously classified including explosives and fireworks, glue, gelatin, synthetic fibers, photochemical products, unrecorded media, activated carbon and man-made fibers

Color, Temp, pH, COD, TSS, Nitrate, Phosphate, Sulfate, Copper, Zinc, Phenol

251 Manufacture of rubber products (such as tires and tubes)

Color, Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Sulfate, Fluoride, Barium, Arsenic, Cadmium, Lead, Mercury, Nickel, Zinc, Petroleum Oil

2520 Manufacture of plastic products BOD, TSS, Phenols 2610 Manufacture of glass and glass

products including flat glass, containers and glass fibers

pH, COD, TSS, Arsenic, Lead, Petroleum Oil, BOD, Fluoride

2620 Manufacture of cement Temp, pH, TSS 269 Manufacture of other non-metallic

mineral products such as non-refractory and refractory ceramic articles; clay products; construction aggregates, asphalt, asbestos, marble

Color, Temp, pH, BOD, COD, Cadmium, Chromium, Lead, Copper, Zinc




271 Manufacture of basic iron & steel Temp, pH, COD, TSS, Cadmium, Chromium, Cyanide, Lead, Mercury, Zinc, Phenols, Petroleum Oil

2721 Gold and other precious metal refining

Color, Temp, pH, TSS, Ammonia-Nitrogen, Phosphate, Fluoride, Arsenic, Cadmium, Chromium, Cyanide, Lead, Mercury, Boron, Zinc, Phenols

2722 Non-ferrous smelting and refining, except precious metals

Temp, pH, TSS, Arsenic, Cadmium, Lead, Mercury, Zinc, Copper, Iron, Nickel

2723 Non-ferrous rolling, drawing, and extrusion mills


2724 Manufacture of pipe fittings of non-ferrous metal

Color, Temp, pH, TSS, Ammonia-Nitrogen, Phosphate, Fluoride, Arsenic, Cadmium, Chromium, Cyanide, Lead, Mercury, Boron, Zinc, Phenols, Petroleum Oil

2729 Manufacture of basic precious and non-ferrous metal, n.e.c.


2731 Casting/foundry of iron and steel Temp, pH, TSS, Copper, Zinc, Petroleum Oil

2732 Non-ferrous metal casting such as aluminum, copper and zinc alloys

Color, Temp, pH, COD, TSS, Sulfate, Fluoride, Arsenic, Cadmium, Chromium, Lead, Mercury, Iron, Copper, Zinc

Manufacture of fabricated metal products and other metal finishing activities with plating

Chromium, Cyanide, Lead, Iron, Copper, Nickel, Zinc, Petroleum Oil, Chloride, Sulfates, Fluoride, Phosphate, TCE

2892

Manufacture of fabricated metal products and other metal finishing activities

Lead, Iron, Copper, Nickel, Zinc, Petroleum Oil, Chloride, Sulfates, Fluoride, Phosphate, TCE

29 Manufacture of machinery & equipment including household appliances

Color, Temp, pH, COD, TSS

30 Manufacture of office, accounting & computing machinery; electrical machinery and apparatus; computers and peripherals; electric motors, generators, transformers; including primary cells and batteries; medical and optical instruments

Color, Temp, pH, COD, TSS, Iron, Nickel, Zinc, Manganese




32 Manufacture of electronics and semiconductors including radio, television and communication equipment and apparatus

pH, COD, TSS, Lead, TCE

33 Manufacture of medical, precision and optical instruments, watches and clocks

Color, Temp, pH, COD, TSS, Iron, Petroleum Oil

34 Manufacture of motor vehicles, trailers and semi trailers

Color, Temp, pH, COD, TSS, Arsenic, Cadmium, Chromium, Lead, Mercury, Iron, Phenols, Petroleum Oil

35 Manufacture of other transport equipment including ship building, repairing and dismantling; railways and trams; aircraft

Color, Temp, pH, COD, TSS, Arsenic, Cadmium, Chromium, Lead, Mercury, Iron, Phenols, Petroleum Oil

36 Manufacture and repair of furniture Color, Temp, pH, COD, TSS, Arsenic, Cadmium, Chromium, Lead, Mercury, Phenol

3601 Manufacture and repair of furniture, except plastic, to include wood, rattan, etc

Color, Temp, pH

3605 Manufacture of plastic furniture Color, Temp, pH, COD, TSS, 3606 Manufacture and repair of furniture

and fixtures of metal Color, Temp, pH

3609 Manufacture and repair of other furniture and fixtures, n.e.c.

Color, Temp, pH

3710 Recycling of metal waste and scrap Color, Temp, pH, BOD, COD, TSS, Iron, TCE

3720 Recycling of non-metal waste and scrap

Color, Temp, pH, BOD, COD, TSS

391 Manufacture of jewelry and related articles

Color, Temp, pH, COD, TSS, Arsenic, Cadmium, Chromium, Lead, Mercury, Phenols

4010 Generation, collection, and distribution of electricity

Color, Temp, pH, BOD, COD, TSS, Phosphate, Arsenic, Cadmium, Chromium, Lead, Mercury

4020 Manufacture of gas; distribution of gaseous fuels through mains

Color, Temp, pH, BOD, COD, TSS, Nitrate, Chloride, Phosphate, Arsenic, Cadmium, Chromium, Lead, Nickel, Zinc, Phenols

Steam and hot water supply including geothermal power plants

Color, Temp, pH, COD, TSS, Nitrate, Chloride, Phosphate, Arsenic, Cadmium, Chromium, Lead, Copper, Nickel, Zinc

Coal Temp, pH, COD (if water source is surface water), TSS, Arsenic, Cadmium, Chromium, Lead, Mercury, Chloride

4030

Geothermal Temp, pH, COD, TSS, Arsenic,




Cadmium, Chromium, Lead, Mercury, Boron

Hydro Temp, pH Natural gas Temp, pH, COD, TSS Oil Temp, pH, COD, TSS, Arsenic,

Cadmium, Chromium, Lead, Mercury, Chloride

4100 Collection, purification and distribution of water

Color, Temp, pH, TSS

5020 Maintenance and repair of motor vehicles

Color, Temp, pH, BOD, COD, Nitrate, Ammonia-Nitrogen, Phosphate, Petroleum Oil

5040 Sale, maintenance, and repair of motorcycles and related parts and accessories

Color, Temp, pH, BOD, COD, Nitrate, Ammonia-Nitrogen, Phosphate, Petroleum Oil

5050 Retail sale of automotive fuel (fuel stations and oil depots/terminal)

Petroleum Oil, BTEX, PAH

Hotels (including motels, dormitories and resorts)

Color, Temp, pH, BOD, COD, Nitrate, Ammonia-Nitrogen, Phosphate, Total Coliform, AVFO, Fluoride, Boron

55

Restaurants Color, Temp, pH, BOD, COD, TSS, AVFO

61 Shipping operations Color, Temp, pH, BOD, COD, TSS, Nitrate, Petroleum Oil

6343 Grain warehouses (LARGE) Color, Temp, pH, TSS, Ammonia-Nitrogen

6344 Cold storage Color, Temp, pH, TSS 7011 Real estate buying, selling, renting,

leasing, and operating of self-owned/leased apartment buildings, non-residential and dwellings - Commercial Buildings like malls

Color, Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Total Coliform, Surfactants

7012 Real estate buying, developing, subdividing, and selling - Residential condominiums

Color, Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Total Coliform, Surfactants

7013 Cemetery development and sale (including burial crypt)

Color, Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Total Coliform, AVFO, Surfactants

73 Research and development laboratories

Color, Temp, pH, BOD, COD, TSS, Nitrate, Phosphate, and other parameters depending on the nature of their laboratory activities

80 Public and private education services Color, Temp, pH, BOD, COD, TSS, Nitrate, Phosphate, AVFO, and other parameters depending on the nature of their activities




851 Health care facilities (including hospital, specialty hospitals, medical, dental and specialty clinics)

Color, Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Total Coliform, AVFO

900 Sewage and refuse disposal sanitation and similar activities

Color, Temp, pH, BOD, COD, TSS, Nitrate, Ammonia-Nitrogen, Phosphate, Fecal Coliform, AVFO, Arsenic, Cadmium, Chromium, Lead, Mercury

9301 Washing and (dry-) cleaning of clothing and textile

Color, Temp, pH, COD, TSS, AVFO, Surfactants

9303 Funeral and related activities Color, Temp, pH, BOD, COD, Nitrate, Total Coliform, Ammonia-Nitrogen, AVFO

NC1 Hazardous waste treatment, storage and disposal facilities

Color, Temp, pH, BOD, COD, TSS, Nitrate, Phosphate, and other parameters depending on the nature of their activities

NC2 Solid waste management facilities Color, Temp, pH, BOD, COD, TSS, Nitrate, Chloride, Ammonia-Nitrogen, Total Coliform, AVFO, Sulfate, Arsenic, Cadmium, Chromium, Cyanide, Lead, Mercury, Copper, Nickel, Zinc, Phenols, BTEX, TCE, TOPs

NC3 Public markets Color, Temp, pH, BOD, COD, TSS, Nitrate, Chloride, Ammonia-Nitrogen, AVFO

NC4 Scrubbing of flue gases from firing systems (primarily in scrubbing of flue gases from firing systems. This shall not apply to wastewater from other industrial waste-gas-scrubbing systems, from cooling circuits of power stations and industrial processes

Color, Temp, pH, COD, Sulfate, Fluoride, Cadmium, Chromium, Mercury, Copper, Nickel

NC5 Effluent from oil water separators of auxiliary facilities

pH, TSS, Petroleum Oil

NC6 Effluent from sewage and septage treatment facilities

pH, TSS, BOD, Fecal Coliform, AVFO

NC7 Effluent from cooling ponds, cooling towers, and similar facilities (Non-contact cooling system)

pH, Temp, TSS

1 For new GES parameters, implementation is within 3 years from the effectivity of 2 this Administrative Order. 3



1

6.2 Flowrate-based Effluent Standards 2 3 In line with the policy of just and equitable enforcement of compliance and 4 consistent with the goal of maintaining the quality of water bodies based on their 5 intended beneficial usages; and considering the toxicity and fate and transport of 6 these parameters, flowrate-based effluent standards are hereby enforced where 7 different effluent standards are applied based on the volume of effluent discharges. 8 Depending on the volume of effluent discharges, Tables 6-2 to 6-3 shall be enforced 9 and complied with at all times. 10 11

6.3 Effluent Standards Regardless of Volume of Effluent Discharge 12 13 Considering the toxicity, carcinogencity, fate and transport, and bioaccumulation 14 factors, effluent standards for the parameters listed in Table 6-4 shall be enforced 15 and complied with at all times regardless of discharge volume. 16 17

6.4 Effluent Standards for BOD for Strong Industrial Wastes 18 19 For establishments discharging equal to or greater than 3,000 mg/L of BOD per 20 day and where the receiving water body is Class C, D, SC, or SD in accordance with 21 Section 4 of this Administrative Order, the applicable effluent standards in Table 6-22 5 shall at all times be enforced and complied with. 23 24 25



1 Table 6-2 Effluent Standards(a) for Establishments Discharging >30 m3/day) 2


Ammonia as NH3-N Mg/L NDA 0.5 0.5 0.5 7.5 NDA 0.5 0.5 7.5 Animal-Vegetable Fat and Oil

Mg/L NDA 2 10 20 50 NDA 10 20 50

BOD mg/L NDA 20 30 50 120 NDA 30 100 150 COD Mg/L NDA 60 60 100 200 NDA 60 200 300 Chloride mg/L NDA 350 350 450 500 NDA n/a n/a n/a Color (True) TCU NDA 100 100 150 300 NDA 100 150 300 Iron mg/L NDA 5 5 7.5 35 NDA 7.5 7.5 35 Manganese mg/L NDA 2 2 2 20 NDA 2 2 20 Nitrate as NO3-N mg/L NDA 14 14 14 30 NDA 20 20 30 Phenol & Phenolic Substances (b)

mg/L NDA 0.01 0.01 0.5 5 NDA 0.01 0.5 5

Phosphate mg/L NDA 1 1 1 10 NDA 1 1 10 Sulfate mg/L NDA 500 500 600 1,000 NDA 500 600 1,000 Surfactants (MBAS) mg/L NDA 2 3 15 30 NDA 3 15 30 Total Coliform MPN/100mL NDA 3,000 3,000 10,000 15,000 NDA 3,000 10,000 15,000 TSS mg/L NDA 70 85 100 150 NDA 70 100 150 Trichloroethylene Mg/L NDA 0.7 0.7 9 20 NDA 0.7 9 20 3 Notes: 4

(a) GES values are maximum allowable concentration 5 (b) Phenolic substances include 2chlorophenol, 2,4dichlorophenol, and 2,4,6trichlorophenol 6

7



1 Table 6-3 Effluent Standards(a) for Establishments Discharging <30 m3/day) 2


Ammonia as NH3-N mg/L NDA 0.5 0.5 0.9 13 NDA 0.5 0.9 13 Animal-Vegetable Fat and Oil

mg/L NDA 2 10 35 85 NDA 10 35 85

BOD mg/L NDA 20 30 80 200 NDA 30 175 250 COD mg/L NDA 60 60 175 350 NDA 60 350 500 Chloride mg/L NDA 350 350 700 800 NDA n/a n/a n/a Color (True) TCU NDA 100 100 250 500 NDA 100 250 500 Iron mg/L NDA 5 5 13 60 NDA 7.5 13 60 Manganese mg/L NDA 2 2 4 35 NDA 2 4 35 Nitrate as NO3-N mg/L NDA 14 14 24 50 NDA 20 35 50 Phenol & Phenolic Substances(b)

mg/L NDA 0.01 0.01 0.9 9 NDA 0.01 0.9 9

Phosphate mg/L NDA 1 1 2 15 NDA 1 2 15 Sulfate mg/L NDA 500 500 1,000 1,500 NDA 500 1,000 1,500 Surfactants (MBAS) mg/L NDA 2 3 25 50 NDA 3 25 50 Total Coliform MPN/100mL NDA 3,000 3,000 15,000 25,000 NDA 3,000 15,000 25,000 TSS mg/L NDA 70 85 150 250 NDA 70 150 250 Trichloroethylene mg/L NDA 0.7 0.7 15 35 NDA 0.7) 15 35 3 Notes: 4

(a) GES values are maximum allowable concentration 5 (b) Phenolic substances include 2chlorophenol, 2,4dichlorophenol, and 2,4,6trichlorophenol 6

7



1 Table 6-4 Effluent Standards(a) Regardless of Discharge Volume 2


AA A B C D SA SB SC SD Arsenic mg/L NDA 0.02 0.02 0.04 0.08 NDA 0.02 0.04 0.08 Barium mg/L NDA 1.5 1.5 6 8 NDA 1.5 2 8 Benzo(a)pyrene (PAH) µg/L NDA 1.5 1.5 3 6 NDA 1.5 3 6 Boron mg/L NDA 2 2 3 12 NDA 2 20 80 BTEX Benzene mg/L NDA 0.1 0.1 0.5 5 NDA 0.1 0.5 5 Toluene mg/L NDA 3.5 5 20 25 NDA 5 20 25 Ethylbenzene mg/L NDA 1.5 1.5 7.5 10 NDA 1 7.5 10 Xylene mg/L NDA 5 5 15 18 NDA 5 15 18 Cadmium mg/L NDA 0.006 0.006 0.01 0.02 NDA 0.006 0.01 0.02 Chromium as Cr+6 mg/L NDA 0.02 0.02 0.02 0.04 NDA 0.1 0.1 0.2 Copper as dissolved Copper

mg/L NDA 0.04 0.04 0.04 0.08 NDA 0.04 0.04 0.08

Cyanide (Free) mg/L NDA 0.15 0.15 0.2 0.4 NDA 0.04 0.2 0.4 Fecal Coliform MPN/100mL NDA 4 300 400 800 NDA 300 400 800 Fluoride mg/L NDA 2 2 2 4 NDA 3 3 6 Lead mg/L NDA 0.02 0.02 0.1 0.2 NDA 0.02 0.1 0.2 Malathion (Organophosphate)

µg/L NDA 1 1 3 6 NDA 1 3 6

Mercury mg/L NDA 0.002 0.002 0.004 0.008 NDA 0.002 0.004 0.008 Nickel mg/L NDA 0.1 0.2 1 5 NDA 0.2 0.3 1.5 Petroleum Oil mg/L NDA 1 1 1 5 NDA 1 1 5 PCBs(c) µg/L NDA <0.1 <0.1 <0.1 <0.1 NDA <0.1 <0.1 <0.1




pH Range NDA 6.0-9.0 6.0-9.0 6.0-9.5 5.5-9.5 NDA 6.5-9.0 6.0-9.0 5.5-9.5 Temperature(b) oC change NDA 3 3 3 3 NDA 3 3 3 Zinc mg/L NDA 4 4 4 8 NDA 0.1 1.5 3 Total Organochlorine Pesticides(d)

µg/L NDA <0.001 50 50 50 NDA 50 50 50

Aldrin µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 Chlordane µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 Dieldrin µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 DDT µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 Endrin µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 Heptachlor µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 Lindane µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 Methoxychlor µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001 Toxaphene µg/L NDA <0.001 <0.001 <0.001 <0.001 NDA <0.001 <0.001 <0.001

1 Notes: 2

(a) GES values are maximum allowable concentration 3 (b) GES values for temperature refer to the temperature difference of the effluent and abstracted water or the 4

upstream and downstream water quality 5 (c) PCBs are a class of chemicals, which include aroclors, 1242, 1254, 1221, 1232, 1248, 1260, and 1016, CAS 6

numbers 53469219, 11097691, 11104282, 11141165, 12672296, 11096825 and 12674112 respectively. 7 The WQG applies to this set of PCBs. 8

(d) When monitoring for Class AA and A waters, the individual organochlorine pesticides shall be monitored. 9 For Class B, C, D, SA, SB, SC, and SD, Total Organochlorine Pesticides (TOPs) shall be monitored, which 10 refers to the organochlorine pesticides listed in Table 54 plus BHC (,β, , γ), 4,4’DDD, 4,4’DDE, Endusulfan 11 (I, II, and sulfate). 12

13 14



1 Table 6-5 Effluent Standards for Establishments Discharging > 3,000 mg/L BOD 2

3

Water Body Classification Influent BOD (mg/L) Units C D SC SD

mg/L 200 300 200 300 3,000 to 10,000

% removal 97 95 97 95

mg/L 600 1000 600 1000 >10,000 to 30,000

% removal 97 95 97 95

mg/L 900 1,500 900 1,500 >30,000

% removal 97 95 97 95

4 Notes: 5

Use either numerical limits or percentage removal whichever is lower (or whichever is more stringent). 6 7 8



1

6.5 Important Considerations 2 3 In addition to fulfilling the above-stated requirements, the following provisions shall 4 be complied with: 5 6

1) No effluent shall cause the quality of the receiving water body to fall below 7 the prescribed WQG in accordance with its classification. 8

2) No effluent from any point sources shall be discharged into Class AA and SA 9 waters. 10

3) To avoid deterioration of the quality of the receiving water body, no new 11 industrial plant with high waste load potential shall discharge into a water 12 body where the dilution or assimilative capacity of the said water body 13 during dry weather condition is insufficient to maintain its prescribed WQG 14 according to its classification. 15

4) No person shall discharge, wholly or partially, untreated or inadequately 16 treated industrial effluents directly into water bodies or through the use of 17 bypass canals and/or pumps and other unauthorized means. 18

5) No establishment or source of water pollution shall be operated without the 19 control facilities or wastewater treatment system in good order or in proper 20 operation. 21

6) No establishment or source of water pollution shall be operated at capacities 22 beyond the limits of operation or capability of the wastewater treatment 23 facility to maintain the effluent quality within the standards or pertinent 24 conditions required by law and/or stipulated in the Discharge Permit. 25

7) No person shall build, erect, install, or use any equipment, contrivance, or 26 any means the use of which will conceal and/or dilute an effluent discharge 27 and which otherwise constitute a violation of any provisions of these 28 regulations. 29

30

Section 7.0 Modification of WQG and GES 31 32 Any person may request for the modification of the WQG and GES. The request 33 shall include a preponderance of clear and scientifically valid evidence having a 34 probative value to demonstrate that such modification is consistent with these 35 regulations. In addition, “Use Attainability Analyses” (UAA) shall be conducted for 36 a request to upgrade a designated use or lower its classification, which require less 37 stringent guideline values. Request for modification shall be submitted to the 38 DENR Secretary. 39 40 7.1.1 Modification of Designated Uses 41 42 If the DENR Secretary determines that the request for modification of designated 43 use is appropriate, the DENR Secretary shall initiate promulgation of such 44



modification in accordance with the Procedural Guidelines for the 1 Classification/Reclassification of Water Bodies and pertinent provisions of Section 2 19 and Rule 19.11 of the CWA-IRR. 3 4 7.1.2 Addition of Primary Water Quality Parameters 5 6 The DENR may at any time set forth more primary water quality parameters and/or 7 more stringent percentile values than those laid down in this Administrative Order. 8 9 7.1.3 Modification of WQG Values 10 11 Any person may request to modify a class-specific WQG value. If the DENR 12 Secretary determines that the request for WQG value modification is appropriate, 13 the DENR Secretary shall promulgate such modification in accordance with Rule 14 19.5 of the CWA-IRR. In principle, modification of WQG value of a water segment 15 shall not result in a modification of the designated use of the water segment. Newly 16 developed WQG value should still protect the existing and designated uses of the 17 water segment. 18 19 7.1.4 Modification of Significant Effluent Quality Parameters and GES 20

Values 21 22 Any person may request to modify the significant effluent quality parameters per 23 sector and/or the GES values. If the DENR Secretary determines that the request 24 is appropriate, the DENR Secretary shall promulgate such modification in 25 accordance with Rule 19.5 of the CWA-IRR. In principle, modification of the GES 26 value shall not result to modification of the designated use of the receiving body of 27 water. Newly developed GES value should still protect the existing and designated 28 uses of the receiving water body. 29 30 31

Section 8.0 Approved Method of Analysis 32 33 For the purposes of this Administrative Order, all water samples, may it come from 34 surface water, ground water, or domestic, commercial, or industrial effluents shall 35 be analyzed in accordance with Table 7-1. 36 37

Section 9.0 Approval and Periodic Review 38 39 These WQG and GES are subject to approval by the DENR Secretary pursuant to 40 Section 19 of the CWA and shall be reviewed periodically but at least once every five 41 years, and amended as necessary. 42 43

Section 10.0 Penalties 44 45 Any person or group of persons found violating or failing to comply with any Order 46 or Decision of the Department and/or the Pollution Adjudication Board or any 47 provision of this Administrative Order, shall be liable under Section 28 of the CWA. 48 49



Section 11.0 Separability Clause 1 2 Any section or provision of these regulations declared to be unconstitutional or 3 invalid by a competent court, the other sections or provisions hereof shall remain to 4 be in force. 5 6

Section 12.0 Repealing Clause 7 8 The DENR Administrative Orders 34 and 35, Series of 1990 are hereby repealed. 9 10

Section 13.0 Effectivity 11 12 These regulations shall take effect thirty (30) days after publication in the official 13 gazette or any newspaper of general circulation. 14 15 16 17 18 APPROVED. 19 20 21 22 23 Hon. Jose L. Atienza, Jr. 24 Secretary 25 Department of Environment and Natural Resources 26



List of Acronyms and Abbreviations 1 2 3 AVFO Animal-Vegetable Fat and Oil 4 5 BOD Biochemical Oxygen Demand 6 7 BTEX Benzene, Toluene, Ethylbenzene, Xylene 8 9 CWA Clean Water Act 10 11 COD Chemical Oxygen Demand 12 13 DO Dissolved Oxygen 14 15 GES General Effluent Standards 16 17 LGU Local Government Unit 18 19 MBAS Methylene Blue Active Substances 20 21 MPN Most Probable Number 22 23 NC New Category 24 25 NDA No Discharge Allowed 26 27 n.e.c. Not Elsewhere Classified 28 29 PAH Polyaromatic Hydrocarbon 30 31 PCBs Polychlorinated Biphenyls 32 33 PNSDW Philippine National Standards for Drinking Water 34 35 PSIC Philippine Standard Industrial Classification 36 37 TCE Trichloroethylene 38 39 TDS Total Dissolved Solids 40 41 TOPs Total Organochlorine Pesticides 42 43 TSS Total Suspended Solids 44 45

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