Find state-certified water testing labs by state
Draft — pending expert review · Updated
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State-certified water testing labs are the labs your state has approved to test drinking water, so the right lab for your sample depends on where you live. A state page lists the certified labs in that state that accept samples from homeowners, the free and low-cost testing programs run by the state, counties and universities, and what a bacteria test costs at those labs.
How lab certification works
Under the Safe Drinking Water Act, each state runs its own program that certifies labs to test drinking water, and EPA links to every state's program and its list of certified labs. In Michigan the program is run by the Department of Environment, Great Lakes, and Energy (EGLE), in Pennsylvania by the Department of Environmental Protection (DEP) and in Ohio by Ohio EPA. We read each lab's certifications from the state's own registry, and we check on each lab's own website whether it accepts samples from homeowners.
Which states have a page
We are adding states one at a time. A state gets its own page once enough certified labs there have a verified homeowner policy and the page has passed expert review. Every state is in the list below. A state with a page links to it, and every other state links its official list of certified drinking water labs: the state program EPA lists, with EPA as the source and the date we retrieved it.
All states
| State | Official list of certified drinking water labs | Source |
|---|---|---|
| Alabama | (source: EPA (opens in a new tab), retrieved ) | |
| Alaska | (source: EPA (opens in a new tab), retrieved ) | |
| Arizona | (source: EPA (opens in a new tab), retrieved ) | |
| Arkansas | (source: EPA (opens in a new tab), retrieved ) | |
| California | (source: EPA (opens in a new tab), retrieved ) | |
| Colorado | (source: EPA (opens in a new tab), retrieved ) | |
| Connecticut | (source: EPA (opens in a new tab), retrieved ) | |
| Delaware | (source: EPA (opens in a new tab), retrieved ) | |
| District of Columbia | (source: EPA (opens in a new tab), retrieved ) | |
| Florida | (source: EPA (opens in a new tab), retrieved ) | |
| Georgia | (source: EPA (opens in a new tab), retrieved ) | |
| Hawaii | (source: EPA (opens in a new tab), retrieved ) | |
| Idaho | (source: EPA (opens in a new tab), retrieved ) | |
| Illinois | (source: EPA (opens in a new tab), retrieved ) | |
| Indiana | (source: EPA (opens in a new tab), retrieved ) | |
| Iowa | (source: EPA (opens in a new tab), retrieved ) | |
| Kansas | (source: EPA (opens in a new tab), retrieved ) | |
| Kentucky | (source: EPA (opens in a new tab), retrieved ) | |
| Louisiana | (source: EPA (opens in a new tab), retrieved ) | |
| Maine | (source: EPA (opens in a new tab), retrieved ) | |
| Maryland | (source: EPA (opens in a new tab), retrieved ) | |
| Massachusetts | (source: EPA (opens in a new tab), retrieved ) | |
| Michigan | (source: EPA (opens in a new tab), retrieved ) | |
| Minnesota | (source: EPA (opens in a new tab), retrieved ) | |
| Mississippi | (source: EPA (opens in a new tab), retrieved ) | |
| Missouri | (source: EPA (opens in a new tab), retrieved ) | |
| Montana | (source: EPA (opens in a new tab), retrieved ) | |
| Nebraska | (source: EPA (opens in a new tab), retrieved ) | |
| Nevada | (source: EPA (opens in a new tab), retrieved ) | |
| New Hampshire | (source: EPA (opens in a new tab), retrieved ) | |
| New Jersey | (source: EPA (opens in a new tab), retrieved ) | |
| New Mexico | (source: EPA (opens in a new tab), retrieved ) | |
| New York | (source: EPA (opens in a new tab), retrieved ) | |
| North Carolina | (source: EPA (opens in a new tab), retrieved ) | |
| North Dakota | (source: EPA (opens in a new tab), retrieved ) | |
| Ohio | (source: EPA (opens in a new tab), retrieved ) | |
| Oklahoma | (source: EPA (opens in a new tab), retrieved ) | |
| Oregon | (source: EPA (opens in a new tab), retrieved ) | |
| Pennsylvania | (source: EPA (opens in a new tab), retrieved ) | |
| Rhode Island | (source: EPA (opens in a new tab), retrieved ) | |
| South Carolina | (source: EPA (opens in a new tab), retrieved ) | |
| South Dakota | (source: EPA (opens in a new tab), retrieved ) | |
| Tennessee | (source: EPA (opens in a new tab), retrieved ) | |
| Texas | (source: EPA (opens in a new tab), retrieved ) | |
| Utah | (source: EPA (opens in a new tab), retrieved ) | |
| Vermont | (source: EPA (opens in a new tab), retrieved ) | |
| Virginia | (source: EPA (opens in a new tab), retrieved ) | |
| Washington | (source: EPA (opens in a new tab), retrieved ) | |
| West Virginia | (source: EPA (opens in a new tab), retrieved ) | |
| Wisconsin | (source: EPA (opens in a new tab), retrieved ) | |
| Wyoming | (source: EPA (opens in a new tab), retrieved ) |
Sources (4)
- Contact Information for Certification Programs and Certified Laboratories for Drinking Water (opens in a new tab)US Environmental Protection Agency · Retrieved
- Laboratory certification program (opens in a new tab)Michigan Department of Environment, Great Lakes, and Energy · Retrieved
- Laboratory Accreditation Program (opens in a new tab)Pennsylvania Department of Environmental Protection · Retrieved
- Laboratory Certification (opens in a new tab)Ohio Environmental Protection Agency · Retrieved