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Water Treatment in Washington

14 local Water Treatment pros serving 9 cities across Washington. Looking for water treatment in Washington? HVAC Service Fast lists 14 local Water Treatment companies serving 9 cities — from Seattle and Tri-Cities to Kennewick. Compare Google ratings, check license details and contact companies directly — no middleman, no fees. Washington sees both hot summers (~68°F) and cold winters (~40°F), so equipment works year-round with little downtime. Typical jobs… Read more

Compare Water Treatment Companies in Washington

Local contractors · pick a city to narrow down

Soft Water Specialists logo

Soft Water Specialists

4819 W Clearwater Ave, Kennewick, WA 99336, USA

Water Treatment
5.0 (751) · via Google

Website

Tri-Cities Water Store logo

Tri-Cities Water Store

6510 W Okanogan Ave, Kennewick, WA 99336, USA

Water Treatment
4.9 (239) · via Google

Website

Water Quality Lab

Building E, 800 S Stacy St, Seattle, WA 98134, USA

Water Treatment
4.9 (7) · via Google

Pure Water Northwest

10811 NE State Hwy 104 Ste 101, Kingston, WA 98346, USA

Water Treatment
4.8 (227) · via Google

Website

Culligan Water of Seattle logo

Culligan Water of Seattle

1808 B St NW Building B; Suite 140, Auburn, WA 98001, USA

Water Treatment
4.5 (226) · via Google

Website

About Water Treatment in Washington

Looking for water treatment in Washington? HVAC Service Fast lists 14 local Water Treatment companies serving 9 cities — from Seattle and Tri-Cities to Kennewick. Compare Google ratings, check license details and contact companies directly — no middleman, no fees.

Washington sees both hot summers (~68°F) and cold winters (~40°F), so equipment works year-round with little downtime. Typical jobs include water treatment, water softener installation, whole-house water filtration and seasonal maintenance.

Contractor licensing in Washington runs through the Washington L&I Contractor Verify. Where a company lists a license number on its profile, you can verify it yourself on the official portal before you hire — a two-minute check that filters out most bad actors.

Water Treatment in Washington — FAQ

How many Water Treatment companies are listed in Washington?
HVAC Service Fast currently lists 14 Water Treatment companies across 9 cities in Washington. Every profile shows the data we have on file — ratings from public sources, phone, address and, where available, license numbers.
How do I verify a Water Treatment contractor's license in Washington?
Use the official Washington L&I Contractor Verify search. If a company shows a license number on its HVAC Service Fast profile, look it up there to confirm it is current before signing a contract.
How much does Water Treatment cost in Washington?
Prices vary with job scope, equipment and local labor rates, so treat any flat number online with caution. Our free HVAC cost guide explains typical price factors, and requesting two or three quotes from the companies listed here is the fastest way to see real local pricing.
Which Washington cities have the most Water Treatment pros?
The largest concentrations are in Seattle, Tri-Cities, Kennewick, Pasco, Auburn. Use the city filter to narrow this page, or open a city page for the full local list.

Water Treatment by City in Washington

Open a city page for the full local list of Water Treatment pros.