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CompostingA Virtual Tour
STORMWATER
COMMERCIAL WASTEWATER
RESIDENTIAL WASTEWATER
Municipal Wastewater Treatment Plant
Biosolids Can Go To…
Landfill if they contain heavy metals
Incinerated
Applied on land (but only certain crops and animals can use it)
Composted to further reduce pathogens
EPA regulations• Regulates heavy metals in soil – if they are
over the limits then they need to be put in a landfill or incinerated
• Vectors (insects)• Pathogens (fecal coliforms)
Controversy• Some people are against composting and their
argument is over the heavy metals in the soil• However these metals are monitored by the
EPA and heavy metals already occur in the soil naturally.
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