Oregon Drinking Water: What you need to know

Governing Law and Regulations

Public water systems: Oregon Administrative Rules (OAR) 333-061-0005 to 333-061-0335

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Water supplier responsibilities: OAR 333-061-0025

Revised Total Coliform Rule (RTCR): OAR 333-061-0030

Cross-connection control: OAR 333-061-0070

Coliform investigations: OAR 333-061-0078

Operator certification: OAR 333-061-0210 to 333-061-0272

Domestic wells: OAR 333-061-0305 to 333-061-0335

Regulatory Agencies

Oregon Health Authority Public Health Division Drinking Water Services (DWS)

Water Resources Board

Oregon Department of Environmental Quality (DEQ)

Oregon Environmental Quality Commission (EQC)

U.S. Environmental Protection Agency (EPA) Region 10

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Oregon has been granted primacy by the U.S. Environmental Protection Agency (EPA) to administer the drinking water protection requirements under the federal Safe Drinking Water Act (SDWA). The state generally follows the federal maximum contaminant level (MCL) rules.

Administration and enforcement. Oregon Health Authority's Drinking Water Services (DWS) is responsible for administering and enforcing the state and federal SDWA requirements in Oregon. In addition, the Water Resources Board regulates potable water supply wells.

State Requirements


OAR 333-061-0025

Water suppliers are responsible for taking all reasonable actions to ensure that the water delivered to water users does not exceed maximum contaminant levels, to ensure that water system facilities are free of public health hazards, and to ensure that water system operation and maintenance are performed as required by these rules. Such actions include, but are not limited ...

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Governing Law and Regulations
Regulatory Agencies
Comparison: State vs. Federal
State Requirements

State Requirements

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Oregon Drinking Water Resources

Drinking Water Products

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