Ground and Surface Water Quality Information
Water quality standards provide protection and preservation of the waters of the state.
Along with regulations, monitoring helps Ecology to keep track of how well water cleanup plans and best management practices are working to help water bodies meet and maintain water quality standards. Water reclamation and reuse helps Washington efficiently use its waters.
Water Quality Standards
Surface Water Quality Standards
Whole Effluent Toxicity (WET) Testing (WQP)
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