Governing Law and Regulations
Ohio Environmental Protection Agency (Ohio EPA) Division of Drinking and Ground Waters Drinking Water Program
Ohio Advisory Board of Examiners
U.S. Environmental Protection Agency (EPA) Region 5
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. The Ohio Environmental Protection Agency (Ohio EPA) has been granted primacy by the U.S. Environmental Protection Agency (EPA) to administer the rules and requirements of the Safe Drinking Water Act (SDWA) in the state.
Ohio generally follows the federal rules for maximum contaminant levels (MCL) in drinking water, and has some additional requirements as well. For example, the state has specified an MCL for nickel of 0.1 milligrams per liter (mg/L).
In addition, Ohio has specified an MCL for bromate that applies to all community and nontransient, noncommunity public water systems (PWSs) that treat their water with ozone. Surface water systems must comply with the bromate MCL of 0.010 mg/L.
Ohio has adopted the federal Revised Total Coliform Rule (RTCR). For more information ...