Governing Law and Regulations
Illinois Environmental Protection Agency (IEPA) Bureau of Water Division of Public Water Supplies
Illinois Department of Public Health (IDPH) Office of Health Protection Division of Environmental Health Non-Community Water Supply Program
Illinois Pollution Control Board (Board)
U.S. Environmental Protection Agency (EPA) Region 5
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Illinois has received primacy from the U.S. Environmental Protection Agency (EPA) to administer the public water supply rules under the federal Safe Drinking Water Act (SDWA). The state generally follows the federal primary drinking water standards, including those pertaining to disinfection, drinking water analytical methods, and approval of alternative testing methods, with ...