Washington State · all 39 counties

Find well drillers and pump pros you can check for yourself

Compare well drillers, pump and well service companies, sand bailing and cleanout, water treatment and testing labs. Every listing is checked against Ecology and L&I license records and shows its sources.

License checks

Driller licenses are matched to Washington Ecology, contractor registrations to L&I, with links to verify.

Reviews, attributed

Live Google ratings where available, plus links to each company’s other review pages.

Every fact sourced

Each listing cites its sources and shows when it was last verified. No paid placements.

What do you need?

Before you hire

  1. Drilling, deepening, liners or screens? The person running the rig needs an active Ecology water well license. Look them up.
  2. Pump or electrical work? Check the company’s L&I contractor registration and pump specialty. Verify with L&I.
  3. Find your well log first. Depth, casing, screen and yield are on it. Ecology well report search.
  4. Get it in writing. Ask for line items (per-foot drilling, casing, pump, tank, wiring, mobilization), a dry-hole policy and who files the paperwork.
  5. Test the water after any work. Use an Ecology-accredited lab for bacteria and nitrate.

Read the guides

Counties with the most wells

Where private wells are most common, by new domestic wells and share of residents on wells.