In the March 3, 2021 Federal Register, EPA issued its final regulatory determinations for substances on the fourth Drinking Water Contaminant Candidate List (“CCL 4”). Under the federal Safe Drinking Water Act, EPA is required to publish a list every five years of chemicals that are known or suspected to be found in public drinking water systems and are not currently subject to EPA drinking water regulations. As part of the process, EPA must also select five or more contaminants from the CCL and determine whether or not to regulate them. Read more…
