OHA Drinking Water Services
OR41
PWS ID: 00457 ---- LAKE OSWEGO MUNICIPAL WATER

Most Recent Water System Survey
Survey date: Oct 16, 2025
Notification date: Nov 04, 2025 (19 days)
Regulating agency: DWS (REGION 1)
Survey frequency: 3 YR  -  Visit the Water System Surveys page to see the list of surveys due each year.
Significant deficiencies and unmet rule requirements:
Category Significant deficiency or unmet rule requirement Due date Resolved date
Cross Connection Testing records not current (CWS, NTNC, TNC)Dec 23, 2025 Oct 16, 2025
Management & Operations Annual CCR not distributed (CWS)Dec 23, 2025 Sep 02, 2025
Bold text indicates a significant deficiency. All others are unmet rule requirements.


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