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Water Treatment Companies Serving Montgomery County
6 water filtration and water treatment companies that are based in or say they serve Montgomery County, in alphabetical order.
Len The Plumber Heating & Air
A plumbing and HVAC company with Silver Spring and Beltsville offices that has a Washington, DC service area. It installs whole-house filtration and softeners, and for well homes it tests water and installs filtration, softening, disinfection (including UV) and reverse osmosis.
Mallick Plumbing & Heating, Inc.
A Montgomery County plumbing company that says it serves parts of Northwest Washington, DC. It installs and services softeners (including commercial softening), whole-house filtration, reverse osmosis and UV, and tests municipal and private well water.
National Water Service
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
An environmental testing company with Poolesville and Columbia offices that offers home water testing across central Maryland, Northern Virginia and Washington, DC.
Pristine Water Treatment
A Stafford-based water treatment company that lists Washington, DC among its service areas. It offers free in-home and paid lab water testing, softeners, iron, sulfur and acid-neutralizer systems, reverse osmosis, whole-house carbon filtration and UV for wells, and repairs most makes.
Roto-Rooter Plumbing & Water Cleanup (Washington, DC)
The Washington, DC branch of the Roto-Rooter plumbing network. Its local page says it installs and services salt-based, salt-free and dual-tank water softeners and also links to whole-house filtration and a hard water test.