Some environmental groups argue that the EPA can’t legally weaken the regulations. The Safe Water Drinking Act gives the EPA authority to limit water contaminants, and it includes a provision meant to prevent new rules from being looser than previous ones.

The Environmental Protection Agency is rolling back rules limiting forever chemicals in drinking water. The Trump administration plans to weaken drinking water rules meant to protect Americans from “forever chemicals” that have been linked to cancer, reproductive risks, liver damage, and other health issues.

The Environmental Protection Agency will rescind and reconsider drinking water standards for four chemicals that have been linked to a range of illnesses.