Agency: Alabama Department of Public Health, Division of Community Environmental Protection
Contact: Patricia Lindsey (patricia.lindsey@adph.state.al.us)
Phone: (334) 206-5375
Website: ADPH Environmental Services

Agency: Alaska Department of Environmental Conservation
Contact: Tonya Bear, P.E. (tonya.bear@alaska.gov)
Phone: (907) 451-2177
Website: Alaska DEC Wastewater

Agency: Arizona Department of Environmental Quality
Contact: Erin Jordan, R.S. (jordan.erin@azdeq.gov)
Phone: (602) 771-2215
Website: ADEQ Onsite Wastewater

Agency: Arkansas Department of Health, Environmental Health Branch
Contact: J. Terry Paul (jpaul@arkansas.gov)
Phone: (501) 661-2171
Website: ADH Environmental Health

Agency: California State Water Resources Control Board
Note: Permitting is typically handled at the county level
Website: CA Water Boards OWTS

Agency: Colorado Department of Public Health & Environment
Website: CDPHE OWTS Program

Agency: Connecticut Department of Public Health
Website: CT DPH Subsurface Sewage

Agency: Delaware Department of Natural Resources and Environmental Control
Website: DNREC Onsite Wastewater

Agency: Florida Department of Health (transitioning to Department of Environmental Protection in 2025)
Website: FL DOH Onsite Sewage

Agency: Georgia Department of Public Health, Environmental Health
Website: GA DPH Environmental Health

Agency: Hawaii Department of Health, Wastewater Branch
Website: Hawaii DOH Wastewater

Agency: Idaho Department of Environmental Quality
Website: Idaho DEQ Septic Systems

Agency: Illinois Department of Public Health
Website: IDPH Private Sewage

Agency: Indiana State Department of Health
Website: ISDH Residential Onsite Sewage

Agency: Iowa Department of Natural Resources
Website: Iowa DNR Private Sewage

Agency: Kansas Department of Health and Environment
Website: KDHE Onsite Wastewater

Agency: Kentucky Cabinet for Health and Family Services
Website: KY CHFS Onsite Sewage

Agency: Louisiana Department of Health
Website: LDH Onsite Wastewater

Agency: Maine Department of Health and Human Services
Website: Maine DHHS Subsurface Wastewater

Agency: Maryland Department of the Environment
Website: MDE Onsite Systems

Agency: Massachusetts Department of Environmental Protection
Website: MassDEP Title 5

Agency: Michigan Department of Environment, Great Lakes, and Energy
Website: EGLE Onsite Wastewater

Agency: Minnesota Pollution Control Agency
Website: MPCA Subsurface Sewage

Agency: Mississippi State Department of Health
Website: MSDH Onsite Wastewater

Agency: Missouri Department of Health and Senior Services
Website: MO DHSS Onsite Wastewater

Agency: Montana Department of Environmental Quality
Website: MT DEQ Septic Systems

Agency: Nebraska Department of Environment and Energy
Website: NDEE Onsite Wastewater

Agency: Nevada Division of Environmental Protection
Website: NDEP Septic Systems

Agency: New Hampshire Department of Environmental Services
Website: NHDES Subsurface Systems

Agency: New Jersey Department of Environmental Protection
Website: NJDEP Onsite Wastewater

Agency: New Mexico Environment Department
Website: NMED Liquid Waste

Agency: New York State Department of Health
Website: NYSDOH Wastewater Treatment

Agency: North Carolina Department of Health and Human Services
Website: NC DHHS Onsite Water Protection

Agency: North Dakota Department of Environmental Quality
Website: ND DEQ Onsite Sewage

Agency: Ohio Department of Health
Website: ODH Sewage Treatment Systems

Agency: Oklahoma Department of Environmental Quality
Website: OK DEQ Onsite Sewage

Agency: Oregon Department of Environmental Quality
Website: Oregon DEQ Onsite Septic

Agency: Pennsylvania Department of Environmental Protection
Website: PA DEP Onlot Sewage

Agency: Rhode Island Department of Environmental Management
Website: RI DEM OWTS

Agency: South Carolina Department of Health and Environmental Control
Website: SC DHEC Onsite Wastewater

Agency: South Dakota Department of Environment and Natural Resources
Website: SD DENR Onsite Wastewater

Agency: Tennessee Department of Environment and Conservation
Website: TDEC Septic Systems

Agency: Texas Commission on Environmental Quality
Website: TCEQ OSSF Program

Agency: Utah Department of Environmental Quality
Website: Utah DEQ Onsite Wastewater

Agency: Vermont Department of Environmental Conservation
Website: VT DEC Wastewater Systems

Agency: Virginia Department of Health
Website: VDH Onsite Sewage

Agency: Washington State Department of Health
Website: WA DOH Wastewater Management

Agency: West Virginia Department of Health and Human Resources
Website: WV DHHR Environmental Engineering

Agency: Wisconsin Department of Safety and Professional Services
Website: WI DSPS Private Onsite Wastewater

Agency: Wyoming Department of Environmental Quality
Website: WY DEQ Water Quality