From The Guardian:
https://www.theguardian.com/environment ... age-sludgeSewage sludge that wastewater treatment districts across America package and sell as home fertilizer contain alarming levels of toxic PFAS, also known as “forever chemicals”
Many of the biosolid brands market the products as “eco”, “natural”, “reclaimed” or “organic”, which Miller characterized as “comforting” but misleading.
“These are words that can have some truth but there’s no legal definition for them,” she added. While some brands state that the product is made with biosolids, packaging doesn’t explicitly say that it’s a combination of human and industrial sewage waste.
Among the few standards for PFAS in sludge are in Maine, where the state government set screening levels for PFOA and PFOS, two common types of PFAS. It developed the standards after milk from cows on a dairy farm that spread sludge were found to be contaminated with high levels of PFAS. The cows had to be killed, and the farmers found extremely high PFAS levels in their blood.