Wastewater Treatment Plant

Reclaimed Water

Reclaimed Water

Reclaimed water is an important component of wise water management. It is an element of the state's strategy to extend potable water reserves. Reclaimed water is derived from domestic wastewater and small amounts of industrial process water or stormwater.

The process of reclaiming water, sometimes called water recycling or water reuse, involves a highly engineered, multi-step treatment process that speeds up nature's restoration of water quality. The process requires a high-level of disinfection and reliability to assure that only water meeting stringent requirements leaves the treatment facility.

Reclaimed Water Standards in Place Until New Rule Adoption

The Departments of Health and Ecology – with assistance of a Water Reuse Advisory Committee, interested stakeholders, and a consultant team of nationally recognized water reuse experts – developed standards for most applications of reclaimed water prior to the new Reclaimed Water Rule adoption.

The Washington State standards are some of the most comprehensive and technically sound reclaimed water standards in the United States.

Current requirements: Water Reclamation and Reuse Standards



Reclaimed Water Rulemaking

Reclaimed Water Facilities map and information

Subscribe to the Reclaimed Water ListServ

2009 Report to the Legislature Water Rights Impairment Standards for Reclaimed Water


Water Smart, Not Water Short - 5 Ways to Secure Water for Washington's Future