About FindWaterLab

FindWaterLab is a free, independent directory of state-certified water testing laboratories. It helps homeowners, well owners and home buyers find a lab that's certified for the test they need.

How we verify

Listings come only from official state certification records. For Oklahoma, that's the Oklahoma Department of Environmental Quality (DEQ) Laboratory Accreditation Program list of accredited labs, and the DEQ accreditation search for each lab's certified drinking-water tests. Every page shows its source and the date we last checked it. If a record doesn't list a lab's tests, we say "Contact lab for certified tests" rather than guess.

Independence

Labs can't pay to be listed or ranked. We're not affiliated with any state agency or lab. The site may show ads to cover costs; ads are labeled and never change the listings.