Water Filtration Directory: DCAn independent local directory

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Water Treatment Companies Serving Fairfax County

3 water filtration and water treatment companies that are based in or say they serve Fairfax County, in alphabetical order.

Cherry Blossom Plumbing

Arlington, VA · (703) 214-2551 · Website

An Arlington plumbing company serving Northern Virginia and Washington, DC. It offers free water testing for hardness, chlorine and sediment, then sizes whole-home carbon or sediment filtration, softeners or reverse osmosis to the results.

National Water Service

Woodbine, MD · (301) 854-1333 · Website

A Maryland water treatment and plumbing company that says it serves all of Washington, DC. Its DC page covers compact softeners for condos and townhomes, catalytic carbon filtration for chloramine, reverse osmosis and free in-home water testing; it also handles well water and commercial systems.

Peak Environmental

Poolesville, MD · (301) 364-9509 · Website

An environmental testing company with Poolesville and Columbia offices that offers home water testing across central Maryland, Northern Virginia and Washington, DC.