Oregon Water & Wastewater Operator Certification

Who regulates water operators in Oregon?

Wastewater: Oregon DEQ. Drinking water: Oregon Health Authority Drinking Water Services. administers the credentials covered here.

Visit the official agency →

Certification types

• Wastewater treatment and collection: Small System and Grades I-IV. Drinking water treatment and distribution: Levels 1-4, Small Water System, and filtration endorsement.

Certification levels / grades / classes

Wastewater treatment and collection: Small System and Grades I-IV. Drinking water treatment and distribution: Levels 1-4, Small Water System, and filtration endorsement.

Initial certification requirements

Wastewater applicants meet pathway education/experience and take WPI/PSI exam, then apply through Your DEQ Online.

Exam information

Wastewater applicants meet pathway education/experience and take WPI/PSI exam, then apply through Your DEQ Online.

Renewal cycle

Drinking-water certificates renew biennially by last-name cycle and require 2.0 CEU. Wastewater renewal/CE is governed by OAR 340-049 and processed through Your DEQ Online; the page must link DEQ's live renewal FAQ for the grade-specific value.

Continuing-education requirements

Drinking-water certificates renew biennially by last-name cycle and require 2.0 CEU. Wastewater renewal/CE is governed by OAR 340-049 and processed through Your DEQ Online; the page must link DEQ's live renewal FAQ for the grade-specific value.

Reciprocity / out-of-state operators

Wastewater: valid good-standing out-of-state/provincial or WPI certificate plus Oregon education/experience; standardized exam may waive same grade, state-specific exam may waive one grade lower.

Water vs. wastewater differences

Wastewater treatment and collection: Small System and Grades I-IV. Drinking water treatment and distribution: Levels 1-4, Small Water System, and filtration endorsement.