EPA Regulations

US Environmental Protection Agency

• EPA
• EPA News Update

Water

• EPA Office of Ground Water & Drinking Water
• National Primary & Secondary Drinking Water Regulations (MCL’s)
• National Primary & Secondary Drinking Water Regulations
• Search EPA’s Drinking Water Database (Locate individual PWS records)
• Stage 2 Disinfectants and Disinfection Byproducts Rule Fact Sheet

EPA Wastewater

• Clean Water Act (CWA)
• National Pollutant Discharge Elimination System (NPDES)
• NPDES Regulations
• NPDES Topics: regulatory information by program area, such as animal feeding operations, combined sewer overflows, pesticides and more.
• Clean Water Act Section 319: the Nonpoint Source Management Program.

State

• Montana Department of Environmental Quality – Water Quality Circulars