Regulations are made by both federal and state agencies. The Safe Drinking Water Act (SDWA) passed by Congress in 1974 and amended in 1986 and 1996 is governed by the United States Environmental Protection Agency (EPA).
Within the EPA, the Office of Ground Water and Drinking Water administers the drinking water program under the Public Water Supply Supervision Program. Their functions include:
- Setting the maximum contaminant levels (MCLs) for contaminants in drinking water and setting other requirements to ensure that drinking water is safe.
- Delegating primary enforcement responsibilities to the states. Monitoring state activities to ensure that regulations are being met.
- Operating the program in states that have not accepted primary enforcement responsibility.
- Providing technical assistance to the states.
Provided for int he SDWA is the intent that states accept primary responsibility for enforcement of their drinking water programs. Under these provisions, each state must establish requirements for public water systems at least as stringent as those set by the EPA. In Virginia, the agency is the Virginia Department of Health (VDH).
In addition to the SDWA, the EPA has promulgated several specific rules to address various types of water contaminant problems. Some of these rules are: Surface Water Treatment Rule, Total Coliform Rule, and the Lead and Copper Rule.