Since 1980, EPA has fail to do it's job. At some point in the future the EPA Office of Hazardous waste may identify some "Etiologic" pathogenic disease organisms and figure out how to treat infectious waste such as sludge biosolids.
(ii) Any mixture of domestic sewage and other wastes that passes through a sewer system to a publicly-owned treatment works for treatment. “Domestic sewage” means untreated sanitary wastes that pass through a sewer system.
(21) Zinc fertilizers made from hazardous wastes, or hazardous secondary materials that are excluded under paragraph (a)(20) of this section, provided that:
(i) The fertilizers meet the following contaminant limits:
(A) For metal contaminants:
(B) For dioxin contaminants the fertilizer must contain no more than eight (8) parts per trillion of dioxin, measured as toxic equivalent (TEQ).
Constituent
Maximum Allowable Total Concentration in Fertilizer, per Unit (1%) of Zinc (ppm) See Part 503.13 levels