Verified license

Ken Thompson Drilling

Moses Lake, WA · Grant CountyWell drilling

Call (509) 765-3080
DirectionsEmail
License status
Active
checked September 29, 2026
License number
648
Washington record
Services
3
Well Abandonment and more
Counties served
4
on the state record

About Ken Thompson Drilling

Ken Thompson Drilling is a well drilling contractor based in Moses Lake, WA (Grant County). The Washington licensing program lists license 648 as active, and we last checked the record on September 29, 2026.

The state record covers well abandonment, well drilling and well repair. It lists 4 counties where the business works, including Grant County, Lincoln County and Adams County.

This profile is built from public state license records checked on September 29, 2026. Well Water Insider does not rate or endorse contractors. Own this business? Claim the profile to add photos, hours and a description.

License record

Verified against state records
License number
648
License type
Well drilling
Status
Active
Expires
June 24, 2028
Last verified
September 29, 2026

Check this license yourself on the official Washington lookup.

What the state record says

Ecology-licensed water well drillers at this company: Ken R Thompson (license 648, through 2028-06-24); Kenneth Roy Thompson Jr (license 3135, through 2028-02-09). The Ecology license covers constructing, altering and decommissioning water wells under chapter 173-160 WAC; pump installation is not licensed by the state. Filed 32 water well reports with Ecology since 2016, most recently in July 2024, mostly in Grant, Lincoln and Adams counties. Also filed 2 reports for other well types (monitoring, geotechnical, decommissioning).

Services

What the Washington record says Ken Thompson Drilling is licensed or registered to do.

Well Abandonment

Sealing an unused well to state standards so it cannot carry surface water down into the aquifer.

Well Drilling

Drilling a new private well, setting the casing and grouting it the way state rules require.

Well Repair

Fixing casings, caps, pitless adapters and other parts of an existing well.

Service area

Based in Grant County, Washington. The state record lists 4 counties.

Approximate location (Grant County)Counties on the state record

  • Grant County
  • Lincoln County
  • Adams County
  • Franklin County

Well water in Grant County

Useful context before you call a contractor here.

33%of households in Grant County drink from a private well (est.)
Not statewidewater test when a home with a well is sold: no statewide rule in Washington, but some local areas require one
Open the Grant County well guide

Typical costs for these services

National ranges to help you read a quote. They are not prices from Ken Thompson Drilling; ask for a written estimate.

New well, complete$6,000 to $16,000typical 200 ft well with pump; drilling alone about $20 to $30 per foot; deeper wells cost more
Shock chlorination$80 to $200by a contractor; under $30 to do yourself

National 2026 ranges. Sources, checked September 2026: HomeGuide cost guides, Angi.

Certified labs nearby

Test your water before and after any work on the well.

AV Labs, IncOthello, WA · 28.4 mi
All labs near here

Before you hire

  1. 1

    Confirm the license

    Look up license 648 on the Washington state lookup and make sure it is active for the work you need. Open the Washington lookup.

  2. 2

    Get a written estimate

    Ask for the scope, parts, depth or pump size, permit fees and warranty in writing. Compare two or three quotes for big jobs.

  3. 3

    Ask about permits and the well log

    New wells and many repairs are reported to the state. Ask who files the paperwork and for a copy of the well log.

  4. 4

    Test the water after the work

    Any work on a well can disturb bacteria. Test for coliform bacteria once the job is done.

Questions about Ken Thompson Drilling

Is Ken Thompson Drilling licensed?

Yes. The Washington record shows license 648 (well drilling) with the status "active", last checked on September 29, 2026. You can confirm it on the state lookup.

What services does Ken Thompson Drilling offer?

The state record lists well abandonment, well drilling and well repair. Call to confirm they take on your type of job.

What areas does Ken Thompson Drilling serve?

The business is based in Grant County (Moses Lake, WA). The state record lists 4 counties, including Grant County, Lincoln County, Adams County and Franklin County.

How do I contact Ken Thompson Drilling?

Call (509) 765-3080 and email them. The address on the state record is 1311 Fairway Dr, Moses Lake, WA 98837.

Other licensed contractors near Moses Lake