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

The Environmental Protection Agency will roll back some regulations for toxic “forever chemicals” in drinking water. The agency will keep other rules for PFAS chemicals but extend the compliance deadline by two years.

The Environmental Protection Agency said Wednesday that it plans to weaken limits on some “forever chemicals” in drinking water that were finalized last year, while maintaining standards for two common ones.