Every state runs its private-well and septic programs a little differently — different agencies, different testing recommendations, different permit rules. This directory links straight to the official state agency pages for all 50 states, so you can find your state's testing programs, approved labs, and septic requirements without digging.
Two things to know before you dive in. First, in many states septic permits are actually issued by your county or local health department — the state page will point you to the right local office. Second, state programs tell you what to test for and when; if you want the how-to, start with our complete well water testing guide.
| State | Agency | Private wells | Septic systems |
|---|---|---|---|
| Alabama | Alabama Department of Public Health | Well water program | Septic program |
| Alaska | Alaska Department of Environmental Conservation | Well water program | Septic program |
| Arizona | Arizona DHS / ADEQ | Well water program | Septic program |
| Arkansas | Arkansas Department of Health | Well water program | Septic program |
| California | California State Water Resources Control Board | Well water program | Septic program |
| Colorado | Colorado Department of Public Health and Environment | Well water program | Septic program |
| Connecticut | Connecticut Department of Public Health | Well water program | Septic program |
| Delaware | Delaware DNREC | Well water program | Septic program |
| Florida | Florida DOH / Florida DEP | Well water program | Septic program |
| Georgia | Georgia Department of Public Health | Well water program | Septic program |
| Hawaii | Hawaii Department of Health | Well water program | Septic program |
| Idaho | Idaho Department of Environmental Quality | Well water program | Septic program |
| Illinois | Illinois Department of Public Health | Well water program | Septic program |
| Indiana | Indiana Department of Health | Well water program | Septic program |
| Iowa | Iowa Department of Natural Resources | Well water program | Septic program |
| Kansas | Kansas Department of Health and Environment | Well water program | Septic program |
| Kentucky | Kentucky EEC / CHFS | Well water program | Septic program |
| Louisiana | Louisiana Department of Health | Well water program | Septic program |
| Maine | Maine CDC (DHHS) | Well water program | Septic program |
| Maryland | Maryland Department of the Environment | Well water program | Septic program |
| Massachusetts | Massachusetts DEP | Well water program | Septic program |
| Michigan | Michigan EGLE | Well water program | Septic program |
| Minnesota | Minnesota DOH / MPCA | Well water program | Septic program |
| Mississippi | Mississippi State Department of Health | Well water program | Septic program |
| Missouri | Missouri Department of Health and Senior Services | Well water program | Septic program |
| Montana | Montana DPHHS / DEQ | Well water program | Septic program |
| Nebraska | Nebraska DHHS / Dept. of Water, Energy and Environment | Well water program | Septic program |
| Nevada | Nevada Division of Environmental Protection | Well water program | Septic program |
| New Hampshire | New Hampshire Department of Environmental Services | Well water program | Septic program |
| New Jersey | New Jersey Department of Environmental Protection | Well water program | Septic program |
| New Mexico | New Mexico Environment Department | Well water program | Septic program |
| New York | New York State Department of Health | Well water program | Septic program |
| North Carolina | North Carolina DHHS | Well water program | Septic program |
| North Dakota | North Dakota Department of Environmental Quality | Well water program | Septic program |
| Ohio | Ohio Department of Health | Well water program | Septic program |
| Oklahoma | Oklahoma Department of Environmental Quality | Well water program | Septic program |
| Oregon | Oregon Health Authority / DEQ | Well water program | Septic program |
| Pennsylvania | Pennsylvania Department of Environmental Protection | Well water program | Septic program |
| Rhode Island | Rhode Island DOH / DEM | Well water program | Septic program |
| South Carolina | South Carolina Department of Environmental Services | Well water program | Septic program |
| South Dakota | South Dakota Dept. of Agriculture and Natural Resources | Well water program | Septic program |
| Tennessee | Tennessee Department of Environment and Conservation | Well water program | Septic program |
| Texas | Texas Groundwater Protection Committee / TCEQ | Well water program | Septic program |
| Utah | Utah Department of Environmental Quality | Well water program | Septic program |
| Vermont | Vermont DOH / DEC | Well water program | Septic program |
| Virginia | Virginia Department of Health | Well water program | Septic program |
| Washington | Washington State Department of Health | Well water program | Septic program |
| West Virginia | West Virginia OEHS (DHHR) | Well water program | Septic program |
| Wisconsin | Wisconsin DNR / DSPS | Well water program | Septic program |
| Wyoming | Wyoming Department of Environmental Quality | Well water program | Septic program |
Whatever your state recommends, we'll email you when your next well test or septic pump-out is due. Free, no account needed.
