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Top-Rated Water treatment pros in Vashon - Updated Nov 2026

Blue Line Water Inc.
4.9(
51
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Vashon, WA and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Chris and his team was very thorough in product knowledge and how best to solve our water issues!! The system installation was great and we are so happy we did this treatment system! Our water feels so clean and there is no more order!!"
Response time1 day
29 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Water Doctor of Washington
Water Doctor of Washington
4.6(
68
)
Water Treatment & Purification System - Install or Replace

Serving Vashon, WA and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Very pleased with the service provided. The installation of my water treatment system was put in quickly and clean. The personal were professional and well informed. Highly recommend their services."
Customer on city water
2060s OD Installation in Garage
Whole system installed cleanly in the Garage
Response time10 hrs
62 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Platinum Full Service Plumbing, LLC
Platinum Full Service Plumbing, LLC
4.5(
66
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Vashon, WA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"We really appreciated that Colton and his assistant (Joe?) worked us into their schedule so that we would have hot water before the weekend. They did an efficient job replacing our water heater for a reasonable price. We would use them again in a heartbeat."
Response time8 hrs
84 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
4.6(
1,467
)
Water Treatment & Purification System - Install or Replace

Serving Vashon, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Emergency services offered

Warranties offered

"Had such a good experience ended up having them do alot more projects. Whole home redevice. Whole home generator. Updated breaker box with arc protection. Water softner/filtration system. Minisplit system. Better bathroom fans with odor/humidity sensors. Four ceiling fans. Exterior power outlets. And an electric car charger install as well."
Prep Area
Waterfall Finished!
Excavation jobs and more!
 install grease trap for commercial kitchen
Delivery of Shoring

+334

43 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Pure Water Northwest
Pure Water Northwest
4.8(
13
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Vashon, WA and surrounding areas

In business since 2015

Free estimates

Warranties offered

"Pure Water Northwest (PWN) is the best, easiest way to future-proof your house's water supply. They offer installation of the best products made to clean water for everything from the kitchen sink to the shower, and everything between. Chris owns the company and he employs capable technicians who do most of the surveys & installations for PWN. A couple of them did the initial survey of my house and gave me a simple estimate within an hour, along with a line item for each hole and pipe that needed to be plumbed. When it came time for installation, PWN was pretty busy and Chris jumped in to take over some installations - including mine! I was lucky enough to have a first-rate water purification expert do my installation, and it was excellent. At one point Chris found a valve error a previous plumber made and he resolved the problem and improved the valve in the process. From turning off the water main valve to turning it on again, it was ~90 minutes (super fast). Chris was in and out of my crawl space with new lines run in no time. The purification device was installed smartly in a corner of the garage so it didn't get in the way of parking or anything else. PWN set me up with a slick Texas-made Reionator Pro Ultra by Water Tech, and it has changed my water consumption literally overnight. The PNW-installed Reionator purifies water from the primary line, and even though Kitsap County has high quality water, I love the assurance that for now into the future, no matter what happens to the water utility or the environment, water will be clean for every sink, bathtub, and even toilet. Chris finished off the install with a custom video he did on the spot while I recorded him explaining the system to me - he knows everything rote about the products he installs and the video is much easier to refer to for operation & maintenance than referring to a thousand-page reference manual. And finally, the finance team at PWN was kind enough to let me pay in a few monthly installments for my system, which makes it easier (and less expensive) to finance on a credit card. If you want to invest in the best possible water quality for your house (forever), then I recommend you call Chris & co. at Pure Water Northwest."
Bainbridge - Arsenic
Bainbridge - Arsenic
Bainbridge - Arsenic
Bainbridge - Arsenic
Bainbridge - Arsenic

+30

Response time2 days
Recommended by100%of homeowners
Avatar for Hunt's Services
Hunt's Services
4.5(
1,114
)
Water Treatment & Purification System - Repair or Service

Serving Vashon, WA and surrounding areas

In business since 2012

Emergency services offered

Warranties offered

"The company plumbers arrived on time. They got right to work and completed most of the jobs within an hour. I am pleased with their work. They did not repair my instant hot water dispenser, because their price was too high for me."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+23

Recommended by88%of homeowners
Avatar for Vortex Plumbing Inc
Vortex Plumbing Inc
4.5(
623
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Vashon, WA and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Very happy with this company and the service provided. I made the call at 5 pm on a Friday night. The owner of the company offered to come out after finishing the job he was on. He ended up coming at 9pm, which was later than planned after getting stuck in Friday night traffic. I was just glad that he could still come because my sink was out commission until the disposal could be replaced. I would not hesitate to hire them again or recommend them. In fact, I will be having them back to replace my water heater soon!"
Recommended by91%of homeowners
Showing 1-10 of 31

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