About Find a Water Lab
Find a Water Lab points private well owners to the official, state-certified drinking water laboratories in every state, and explains which tests to order and how to read the results.
Why we built it
EPA estimates more than 23 million U.S. households rely on private wells, and nobody tests that water unless the owner does. Finding a properly certified lab means digging through state agency websites that are organized in fifty different ways. We collect the official lists in one place, by state, with plain guides beside them.
Where the data comes from
Each state page is checked against the state agency that certifies drinking water laboratories, the EPA list of state certification programs, and state health department private well pages. We link to the official source rather than copying lab lists that go out of date.
Who writes it
Find a Water Lab is published by Directory Assistance Group, an independent publisher of free lookup tools and directories, and is written and maintained by a small editorial team. We are not lawyers, engineers, doctors, or government officials, and we do not claim to be. What we do is read the primary sources (statutes, agency guidance, university extension publications, and official court and health-department pages), turn them into plain steps, and link every claim back to where it came from.
How the site is paid for
The site is free to use and is supported by advertising, clearly labeled featured listings, and a few Amazon affiliate links. Advertisers do not choose or review our topics, and payment never changes what a guide says or the official details we list. Read our editorial standards for how we pick sources, correct mistakes, and keep ads separate from content.
Tell us what we got wrong
Rules change and local details vary. If you spot an error or an out-of-date figure, please send us a note with a link to the source. We read every correction and date-stamp the fix.