Northwest (Puget Sound & islands)
A-Plus Water Services
Arlington well pump company serving Snohomish, Skagit, Island and north King counties with pump replacement and repair, pressure tanks, real-estate well inspections and well water treatment.
Access Well Drilling
Sedro-Woolley well driller, started in 2024, drilling residential, irrigation and municipal wells, installing pumps and treatment, inspecting and decommissioning wells in Skagit, Whatcom, Island and Snohomish counties.
Aquatech Well Drilling & Pumps
Sedro-Woolley well driller and pump company drilling domestic and irrigation wells and installing pumps, storage and water treatment across Skagit, Island, Snohomish, San Juan, Whatcom and north King counties.
JKA Well Drilling & Pumps
Family-run Monroe well driller and pump company, founded in 1989, drilling, rehabilitating, inspecting and decommissioning wells and installing pumps, tanks and water treatment for homes in King and Snohomish counties.
Meadow Lake Water Treatment
Family-owned Stanwood water treatment company serving Snohomish, Skagit and Island counties with well water filtration, iron filters, water softeners, drinking water systems and free water testing.
Mr. Bill's Pump & Well
Arlington pump and well service company, established in 1978, serving Snohomish, King, Island and Skagit counties with pump and pressure tank work, holding tanks, well jetting, inspections and water treatment.
Ralph's Pump & Well Service
Monroe well pump company serving Snohomish and north King counties with same-day pump repair, pump and booster installation, real-estate well inspections and well water treatment.
RH Drilling & Services
Water well driller formed in 2010, drilling 5- to 25-inch cable tool and air-rotary wells, deepening and cleaning out wells, and installing pumps and filtration, mainly in Island, Clallam, Pierce and King counties.
Total Wells Pumps and Filtration
Monroe-area well company on the Snohomish–King county line, doing pump repair and replacement, booster and storage systems, well rehabilitation and bailing, camera inspections, real-estate well inspections and filtration.
Southwest & Olympic Peninsula
Advanced Drilling
Rochester, Thurston County, rotary well driller that also deepens and decommissions wells, installs and repairs pumps, pressure tanks and variable speed drives, and installs water treatment in southwest Washington.
American Pump and Drilling
Olympia water system company, registered as Tacoma Pump & Drilling, offering residential and commercial well drilling, pump installation and repair, water treatment, real estate water inspections and well decommissioning.
Blue Line Water
Puyallup water treatment and well pump company, established in 2001, serving Pierce, King, Kitsap and Thurston counties with pump systems, well water treatment, inspections and flow tests.
Clarkes Pump Service
Family-run Lacey well pump company installing and repairing well pumps, pressure tanks, booster pumps and storage tanks, doing well inspections and flow tests, and installing iron filters, softeners and UV systems across the South Sound.
Integrity Pumps & Filtration
Family-owned Sequim pump and filtration company with a store on Business Park Loop, installing and servicing well pumps, pressure tanks, holding tanks and water treatment, with 24-hour emergency pump service.
Mather & Sons Pump Service
Vancouver pump sales and service company, family-owned since 1955, installing and repairing well pumps, pressure tanks and water treatment for homes in southern Washington and the Portland area, plus well testing and sand bailing.
Moerke & Sons Pump & Drilling
Chehalis well driller and pump contractor, family-owned since 1980, offering well drilling and decommissioning, 24/7 pump repair, water filtration and bulk water delivery in southwest Washington.
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Mountain View Pumps & Filtration
Eatonville pump and filtration company, established in 1994, installing and repairing well pumps, pressure tanks and holding tanks, cleaning wells by brush and bail, and selling water treatment across Pierce, south King, Thurston and Lewis counties.
Northwest Water Treatment
Family-owned well water treatment company, founded in 1996, designing and installing softeners, iron and manganese filters, arsenic removal, UV and reverse osmosis for homes and community wells in Pierce, south King and Thurston counties.
Richardson Well Drilling
Puyallup well driller in business since 1939, drilling domestic, irrigation and municipal wells with dual rotary rigs and offering pump service, water conditioning and iron removal in seven western Washington counties.
Sanders Pump and Filtration
Family-owned pump and filtration business based in Amboy, serving southwest Washington with well pump installation and repair, VFD systems, cisterns, flow tests, water testing and well water filtration.
Seattle Water Filtration
Water filtration installer serving King and Pierce counties, mostly for city water, that also sizes and installs whole-house well water treatment for iron, sulfur odor, sediment and hardness, with reverse osmosis for drinking water.
Skyline Pump & Machine
Family-owned Chehalis water system company, in business since 1984, offering well drilling, pump installation and repair, VFD controls, well maintenance, decommissioning and water filtration, with 24/7 emergency service.
United Water Services
Vancouver water treatment company serving Clark, Cowlitz and Skamania counties and the Portland area, with free water testing and well water treatment for iron, sulfur, sediment, bacteria and hardness.
Washington Pure Water Products
Centralia water treatment company installing and servicing iron reduction, water softener, arsenic, UV and reverse osmosis systems for homes and businesses, including homes on well water, with free water testing.
West Coast Plumbing Pumps & Filtration
Family-owned Lacey plumbing, pump and filtration company doing well pump repair, replacement and installation around Olympia since 2012, plus water softeners and filtration, serving Thurston, Pierce, Mason, Grays Harbor and King counties.
Central Washington
Culligan Water Conditioning of the Tri-Cities
Kennewick Culligan dealer offering well water testing, softeners, whole-house filtration and reverse osmosis in Kennewick, Pasco, Richland, West Richland and Prosser, plus Hermiston and Pendleton in Oregon.
Tumwater Drilling & Pump
Dryden well driller and pump company, in business since 1974, drilling 6- to 10-inch domestic and irrigation wells and offering pump service, flow tests and water treatment in Chelan, Douglas, Kittitas and Grant counties.
Eastern Washington
Culligan Water Conditioning of Moscow
Moscow, Idaho Culligan dealer offering well water testing, softeners, whole-house filtration and reverse osmosis, with Pullman and Clarkston among the Washington communities it serves.
Fogle Pump & Supply
Colville-based well driller, pump installer and water treatment company in business since 1981, with offices in Colville, Republic, Airway Heights and Deer Park serving eastern Washington.
H2O Well Service
Well drilling, pump installation and repair, and water treatment company founded in 1976, with offices in Hayden and Sagle, Idaho and Deer Park, Washington, serving North Idaho and Eastern Washington.
Hoffman Quality Water
Walla Walla water treatment dealer, serving the Walla Walla Valley since 1980, installing and servicing Kinetico softeners and filters, UV sterilizers and reverse osmosis systems for well and city water.
Northern Water & Power
Post Falls, Idaho well pump, water treatment and home services company with a Cheney location, serving eastern Washington and north Idaho with well pump repair and installation, reservoirs and well water treatment.
Pride Pump
Chattaroy well and pump service company working around Spokane and the Inland Northwest on well pumps, constant-pressure systems, reservoirs, well inspections, rehabilitation, water testing and treatment.