"A class of toxic chemicals known to have contaminated drinking water in many areas across the country is also presenting human health risks via another exposure method — our food supply.
The contamination stems from treated sewage sludge — or biosolids — often used by farmers as a fertilizer for crops.
Compounding the problem are a lack of research and data on the issue, uncertainty over the extent of the contamination and no specific regulatory framework at the federal level to address the pollution.
Absent clear federal guidance on how to tackle the emerging problem, states are scrambling to find ways to regulate the chemicals, which are now showing up in food and on farmland."