Washington Administrative Code
Title 372 - Ecology, Department of
- 372-36 - Columbia Basin irrigation area—Sewage and waste. (372-36-010 to 372-36-130)
- 372-52 - Water districts requests for approvals and certifications of necessity to operate sewer districts. (372-52-010 to 372-52-070)
- 372-68 - Water pollution control and abatement plans for sewage drainage basins. (372-68-010 to 372-68-100)
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