The Safe Drinking Water Act (SDWA) was passed by Congress in 1974, with
subsequent amendments passed in 1986 and 1996, to ensure and protect the quality of Americans' drinking water. Under SDWA, EPA has the authority to set the standards for drinking water quality and oversee states, localities, and water suppliers who implement these standards. In June 2019, EPA proposed a new perchlorate drinking water standard. EPN commented, raising serious questions about the scientific defensibility of the EPA perchlorate regulation and the validity of the monitoring and cost-benefit analysis.
