Washington Administrative Code Title 508 - Ecology, Department of (Water Resources) (See Titles 173, 197, and 372)
Washington Administrative Code (WAC) Title 508 – Ecology, Department of (Water Resources)
(See also Titles 173, 197, and 372 for active rules)
⚠️ Important Note:
WAC Title 508 is largely a placeholder or legacy title. Most active and enforceable rules related to water resources under the Washington State Department of Ecology are now codified under the following titles:
WAC Title 173 – Main body of rules for the Department of Ecology
WAC Title 197 – Environmental review under the State Environmental Policy Act (SEPA)
WAC Title 372 – Formerly used for certain Ecology functions (now mostly consolidated into Title 173)
🔁 Cross-Referenced Titles Overview:
WAC Title 173 – Ecology, Department of
This is the primary title for the Department of Ecology and includes most rules formerly under Title 508. Key chapters related to water resources include:
173-500 – Water resources management program
173-505 to 173-599 – Specific Water Resource Inventory Areas (WRIAs) rules (basin-level regulations)
173-152 – Water right permitting priorities
173-153 – Coordinated water system plans
173-160 – Water well construction and licensing
173-175 – Dam safety regulations
173-200 – Groundwater quality standards
173-201A – Surface water quality standards
173-183 – Oil spill compensation schedule (linked to water pollution)
WAC Title 197 – Environmental Policy
197-11 – SEPA rules, including water resource project evaluations and environmental impact assessments
WAC Title 372 – Ecology (Water Pollution)
Historically used for water pollution control, but many chapters are now obsolete or repealed in favor of Title 173.
✅ Summary:
Title 508 itself contains no substantive current rules.
All active water resource regulations are found in Title 173, especially WAC 173-500 through 173-600 series.
Titles 197 and 372 provide supplementary rules related to environmental review and legacy pollution regulations.
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