A few points:
- Sewage sludge is mostly feces and animal fats that settle out after water is treated. Once the sewage sludge is treated with lime, it is called biosolids and these are put onto food crops.
- The EPA regulates only nine of 27 heavy metals found in sewage sludge (As, Cd, Cu, Pb, Hg, Mo, Ni, Se, Zn), and no toxic organic chemicals.
- Most of these unregulated chemicals are highly persistent in the environment and get more concentrated up the food chain.
- They are already known to cause problems in animals and humans. These chemicals are linked to autism, ALS, Alzheimer’s disease, Parkinson’s disease.
- "EPA’s solution to pollution was dilution. But, with the promulgation of the 503 sludge rule, EPA’s approach changed to concentrating pollutants on land—where we live, work and play—at millions of times higher levels than allowed elsewhere under the Clean Water and Clean Air Acts." The EPA thus contradicted itself by making the sewage sludge much more concentrated and more dangerous on land, where more people would be exposed to the toxins.
- The EPA claims this more concentrated sludge on land is not harmful due to little understood magical properties: "Sludge magic [means] there are unique properties in the biosolids matrix that sequester metals [and] organics [and] significantly reduce, if not eliminate, movement of pollutants from the biosolids out to the environment."
- Studies showing the "safety" of biosolids and biosolid dust blowing around town were fabricated, like the one at University of Georgia.
Mother Earth News. Feb 2016.