Seattle Water Filtration is a water treatment installer serving Seattle and the greater Puget Sound area, a d/b/a of Nine Dragons Logistics LLC. Its L&I registration lists a Tacoma address. Its service-area page names King and Pierce counties, with core cities Seattle, Bellevue, Kirkland, Redmond, Renton, Kent, Auburn, Federal Way, Tacoma and Lakewood. Most of its website is about whole-home carbon filtration and softening for city water.
Well water. It has a separate well water treatment service for private supplies. The system sits where the water line enters the house and its stages are chosen after a free water assessment, covering iron (orange staining), hydrogen sulfide (rotten-egg smell), grit and sediment, and hardness. Well systems are sized and priced individually, and the kitchen sink gets a reverse osmosis stage. The company says it will point the customer elsewhere when the assessment finds something its stages do not cover.
Terms. The website lists a warranty of five years on parts and one year on labor, with terms given in writing before purchase. L&I lists a contractor registration with the water conditioning equipment specialty. The company does not describe pump work.