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Customers can get recycled water from two King County recycled water systems – in Tukwila from South Plant and in Sammamish Valley from the Brightwater Plant. A third recycled water system in Carnation makes recycled water for a wetland only.

Most recycled water customers have water piped directly to their property. Some customers get recycled water at truck fill locations in Tukwila and the Sammamish Valley and drive the water where they need it.

purple hydrants

King County recycled water maps

Kristina Westbrook


Jacque Klug

Our team will walk you through the steps

  • Initial information application
  • Contracts
  • Training
  • Signage
  • Site Modifications
  • Construction/Inspection
King County distributes recycled water from April to October, because that’s when our customers want it. Call us if you are interested in year-round use. Typically, South Plant distributes recycled water from April-October, and Brightwater distributes it from May-October.

truck street sweeping using waterRecycled water is an excellent choice for projects that need temporary water that is trucked to the property. King County has two recycled water fill stations (see map). In King County, trucks carry recycled water for landscape restoration, small farms, street sweeping, construction sites, and other uses that require trucking.

recycled water irrigation headRecycled water is distributed through separate pipes so it is not mixed with the drinking water supply. Purple is the official color that designates recycled water pipes. You do not have to replace existing systems, but they may need a few modifications, like these:

  • Use clearly visible “reclaimed water not produced for drinking” signs in irrigated areas
  • Put purple tags on valves
  • Paint above grade boxes purple or label them
  • Use purple sprinkler heads when existing sprinkler heads wear out

King County will work with irrigators to determine the most cost-efficient way to meet the requirements.

Recycled water is used on organic crops in California, Oregon, and Florida. King County is working with the State of Washington to confirm recycled water meets the rules for organic crops here.

Even irrigators who currently have a right to use water from a river, lake, or groundwater can work with on King County on cost-effective pricing. The State of Washington has programs that allow irrigators to use recycled water and preserve their legal water rights. The following websites have information and guidance:

For more information about the Recycled Water Program, please contact us at: