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Water testing labs in Charles County, MD

2 state-accredited water testing labs in Charles County, MD.

2 certified labsUpdated October 2026Source: state lab accreditation records

Source: MDE list of certified drinking water laboratories, list dated Oct 1, 2026. Find a Water Test is independent and not affiliated with the Maryland Department of the Environment. Certification covers specific tests, so confirm the lab is certified for the ones you need: Verify a certification.

2 certified labs near Charles County, MD

MW

Mattawoman Water Quality Lab

5310 Hawthorne Road, La Plata, MD

State-accredited labDrinking waterBacteria testingChemical testingPublic or utility lab

Public water system lab. Many don't accept private well samples, so call first.

(301) 609-5612Directions
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Mail-in labs that ship to Charles County, MD

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Well water guides

What to test forBad resultsBuying a home

Common questions

Where can I test well water near Charles County, MD?

The state-accredited labs above serve Charles County, MD. Many offer sample bottles you collect at home.

What should I test for near Charles County, MD?

Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.