Water Quality > Ground/Surface Waters

Ground and Surface Water Quality Information

Water Quality Standards

Ground Water Quality Information
Information on the Ground Water Quality Standards and implementation for the State of Washington.

Surface Water Quality Standards
Information on the Surface Water Quality Standards for the State of Washington.

Water Reclamation and Reuse
Standards for the use of adequately and reliably treated wastewater in place of drinking water for non-potable uses.

Water Quality Monitoring Information

Environmental Conditions and Trends (EAP)

Long-Term River Monitoring (EAP)

Water Quality Monitoring Studies Bibliography (EAP)

Whole Effluent Toxicity (WET) Testing (WQP)
WET tests are required in some wastewater discharge permits in order to measure the potential toxicity of effluents to the rivers, lakes, bays, and ocean waters of the state. WET testing is sometimes called "biomonitoring" or "bioassay testing."