Northwest (Puget Sound & islands)
A & A Well Drilling
Lopez Island company in San Juan County with an Ecology-licensed water well operator and L&I pump registrations, listed from state license records.
A1 Drilling and Digging
Stanwood well contractor building 36-inch dug wells and 6- to 12-inch cable tool drilled wells for domestic, irrigation and community water systems, with well decommissioning and pump sales and service.
AAA Pump & Well Drilling
Family-owned Monroe well driller and pump company, serving Snohomish and King counties since 1960, with drilling, decommissioning, well rehab, pump and storage systems, water treatment and inspections.
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.
Anderson Drilling
Lake Stevens company in Snohomish County with an Ecology-licensed water well operator and L&I pump registrations, listed from state license records.
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.
Arlington Well Drilling
Arlington company in Snohomish County with an Ecology-licensed water well operator, listed from state license records.
B & C Well Drilling
Bellingham company in Whatcom County with an Ecology-licensed water well operator and L&I pump registrations, listed from state license records.
Cascade Drilling NW
Snohomish County driller, established in 1987, offering water well and geothermal drilling, with a specialty in geothermal ground loop installations.
Coolwater Drilling
Bremerton company in Kitsap County with an Ecology-licensed water well operator and L&I pump registrations, listed from state license records.
Crabtree Well Drilling
Family-owned Kingston well driller, in business since 1962, drilling residential and commercial wells, selling and repairing pumps, inspecting and decommissioning wells across Kitsap County and parts of Jefferson and Clallam counties.
Dahlman Pump & Well Drilling
Family-owned Skagit County well driller and pump installer, in business since 1950, drilling 6- to 14-inch wells and installing pumps, tanks and water filtration across northwest Washington.
Gene's Well Drilling
Stanwood company in Snohomish County with an Ecology-licensed water well operator, listed from state license records.
Generation Drilling
Mount Vernon company in Skagit County with an Ecology-licensed water well operator, listed from state license records.
Gregory Drilling
North Bend drilling contractor, in business since 1975, drilling home water wells and deep irrigation wells, rehabilitating and video-inspecting wells, and decommissioning wells across Washington, alongside environmental and geotechnical work.
Gresham Pump & Drilling
Family-owned Poulsbo well driller and pump company, established in 1977, drilling, cleaning and decommissioning wells and installing pumps, storage and treatment in Kitsap, Jefferson, Pierce and Mason 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.
Lofall Well Drilling
Poulsbo water well driller founded in 1988, drilling residential, Group B community and replacement wells, deepening and rejuvenating wells, decommissioning and replacing pumps in Kitsap, Jefferson, Clallam and Mason counties.
Mauldin's Well Service
Friday Harbor company in San Juan County with an Ecology-licensed water well operator and L&I pump registrations, listed from state license records.
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.
Timber Ridge Excavating
Sedro-Woolley company in Skagit County with an Ecology-licensed water well operator, listed from state license records.
Valley Pump Inc.
Family-owned Auburn pump and well drilling company, in business since 1938, drilling wells in King and Pierce counties and installing pumps, tanks and filtration, with well inspections for real estate sales.
WMI Drilling
Family-owned Stanwood water well drilling company, licensed and bonded, serving King, Snohomish, Skagit and Whatcom counties.
Southwest & Olympic Peninsula
Advanced Drilling
Rochester, Thurston County, water well driller listed from state license records, with two Ecology-licensed water well operators.
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.
Aqua Pumps and Drilling
Port Angeles, Clallam County, water well driller listed from state license records, with two Ecology-licensed water well operators and an L&I pump contractor registration.
Arcadia Drilling
Shelton water well driller and pump contractor, family-owned since 1962, drilling wells and installing and servicing pumps, pressure systems and well disinfection across nine western Washington counties.
AW Drill & Pump
Yelm, Thurston County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Big Dog Drilling
Port Townsend, Jefferson County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Bison Drilling
Spanaway, Pierce County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Charon Drilling
Graham, Pierce County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Dale McGhee & Sons
Kelso well driller serving Cowlitz County and surrounding areas since 1946, offering rotary well drilling, deepening and decommissioning, pump and tank installation, and water filtration and conditioning.
Davis Drilling
Belfair, Mason County, water well driller listed from state license records, with two Ecology-licensed water well operators and an L&I pump contractor registration.
Don Pitner Jr Well Drilling
Battle Ground, Clark County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Grande Drilling
Belfair, Mason County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Harris Water Well Drilling
Shelton, Mason County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Ira Bopp Pump and Drill
Kelso, Cowlitz County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Kings Water Wells
Centralia, Lewis County, water well driller listed from state license records, with three Ecology-licensed water well operators.
Mavwell Drilling
Eatonville, Pierce County, water well driller listed from state license records, with one Ecology-licensed water well operator.
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.
- BBB reviews
Oasis Well Drilling
Port Angeles, Clallam County, water well driller listed from state license records, with one Ecology-licensed water well operator and an L&I pump contractor registration.
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.
Ron Edgell Well Drilling
Castle Rock, Cowlitz County, water well driller listed from state license records, with two Ecology-licensed water well operators and an L&I pump contractor registration.
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.
Swanson Drilling
Olympia, Thurston County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Taft Plumbing & Septic
Ocean Park, Pacific County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Tillia Well Drilling
Woman-owned Port Angeles well driller serving Clallam and Jefferson counties for more than two decades, drilling and deepening residential and commercial wells, repairing and decommissioning wells and drilling test holes.
- BBB reviews
Wells and More
Castle Rock, Cowlitz County, water well driller listed from state license records, with one Ecology-licensed water well operator and an L&I pump contractor registration.
Williams Water Wells
Toledo, Lewis County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Williams Well Drilling
Port Angeles, Clallam County, water well driller listed from state license records, with one Ecology-licensed water well operator.
Central Washington
American Drilling
Ellensburg well driller in Kittitas County, listed from Washington Ecology water well operator license records.
Apple Valley Well Drilling
Selah well driller drilling domestic, irrigation, commercial and geothermal wells and decommissioning old wells in Yakima, Kittitas and Klickitat counties.
BB Drilling
Omak company in Okanogan County with an Ecology-licensed water well operator, listed from state license records.
Carpenter Drilling
Benton City drilling contractor, founded in 1995, that does core drilling and builds, restores, cleans and maintains water wells, including Hanford monitoring and water wells.
Cascade Well Drilling
Goldendale well driller in Klickitat County, listed from Washington Ecology water well operator license records.
Cobalt Drilling
Tri-Cities well driller founded in 2021, drilling residential, irrigation and Group A wells, and offering camera inspections, clean-outs, repairs and well decommissioning.
Empire EWP
Wenatchee well driller drilling domestic, irrigation and municipal wells, with pump service, flow testing, water sampling and well decommissioning across central and eastern Washington.
Hidden Rivers Drilling
Selah well driller in Yakima County, listed from Washington Ecology water well operator license records.
Hoopes Well Drilling
Family-run Richland well driller drilling domestic, irrigation and municipal wells, and rehabilitating, cleaning out and decommissioning existing wells.
M-K Pump and Drilling
Dallesport well driller in Klickitat County, listed from Washington Ecology water well operator license records.
M-K Waterwell Drilling
Family-owned Dallesport well driller that has drilled in the Columbia Gorge area for over 50 years, offering new wells, well deepening and decommissioning.
McGuire's Well Drilling
Owner-operated Yakima well driller, in business since 1978, drilling residential, agricultural and community wells and deepening and decommissioning wells in the Yakima Valley.
Moomaw Drilling
Omak well driller in Okanogan County, listed from Washington Ecology water well operator license records.
Oasis Drilling
Union Gap well driller serving the Yakima Valley since 1985, drilling domestic, irrigation, livestock, community and geothermal wells, installing pumps and decommissioning wells.
Peck Drilling
Goldendale well driller in Klickitat County, listed from Washington Ecology water well operator license records.
Rick Poulin Drilling
Selah well driller in Yakima County, listed from Washington Ecology water well operator license records.
Robinson Drilling & Development
Yakima well driller and pump installer, listed from Washington Ecology water well operator licenses and L&I pump contractor registrations.
Schroder's Well Drilling
Goldendale well driller and pump installer in Klickitat County, listed from Washington Ecology water well operator licenses and L&I pump contractor registrations.
Stillwater LLC
Richland well driller in Benton County, listed from Washington Ecology water well operator license records.
Wamsley Well Drilling
Selah well driller serving Yakima and Kittitas counties since 2012, drilling domestic and irrigation wells and offering well rehab, deepening and decommissioning.
Eastern Washington
Beardslee Drilling
Colville water well drilling company in Stevens County, listed from Washington Ecology and L&I license records.
Boyce Drilling
Royal City water well drilling company in Grant County, listed from Washington Ecology license records.
Burns Drilling
Pasco water well drilling company in Franklin County, listed from Washington Ecology license records.
DC Drilling
Moses Lake well drilling contractor drilling domestic, irrigation and municipal wells across the Columbia Basin, with well cleaning, repair, deepening, flow tests and decommissioning.
Elemental Well Service
Deer Park water well drilling company in Spokane County, listed from Washington Ecology license records.
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.
Hickam Well Drilling
Ecology-licensed water well driller in Dayton, Columbia County, operated by Jasper Mountain Enterprises LLC, listed here from Washington state license records.
Horsley Drilling
Family-owned well driller in Athol, Idaho, founded in 2005, drilling residential, irrigation, commercial and municipal wells and abandoning wells in North Idaho and Spokane and Pend Oreille counties.
J & J Well Drilling
Ecology-licensed water well drilling company in Valleyford, Spokane County, listed here from Washington state license records.
Joy Drilling Company
Ecology-licensed water well drilling company in Moses Lake, Grant County, listed here from Washington state license records.
Joyco Drilling
Family-owned well driller and pump installer based near Elk, serving northeast Washington and northwest Idaho with drilling, deepening, cleanout, decommissioning, camera inspection, pumps and cisterns.
Ken Thompson Drilling
Ecology-licensed water well driller in Moses Lake, Grant County, with L&I pump and irrigation licenses, listed here from Washington state license records.
Lemco Drilling
Family-owned well driller and pump company in Lind, drilling domestic, commercial and small irrigation wells and installing and servicing pumps in Adams, Grant, Franklin, Whitman and Lincoln counties.
Marty Rugo LLC
Republic company in Ferry County with an Ecology-licensed water well operator, listed from state license records.
NW Hydro Fracturing
Ecology-licensed water well hydrofracturing business with a Clayton, Stevens County mailing address, listed here mainly from Washington state license records.
RJ Exploration & Drilling
Odessa-based drilling company in Lincoln County whose operators hold Ecology water well licenses. Listed from state license records; no company website was found.
Statewide Well Drilling
Family-owned well drilling contractor headquartered in Pasco, drilling and repairing residential and commercial water wells and decommissioning wells across the Tri-Cities area. It does not install or service pumps.
- Facebook reviews
Tarbert Drilling
Davenport-area water well drilling contractor in Lincoln County with an Ecology water well operator license. Listed from state license records; no company website was found.
The Drillerman
Newport water well driller in Pend Oreille County, with an Ecology water well operator license and L&I domestic pump licenses. Listed from state license records; no working company website was found.