OHA Drinking Water Services
OR41
PWS ID: 95757 ---- COLUMBIA BASIN ONION

Most Recent Water System Survey
Survey Date: Jun 19, 2025
Notification Date: Aug 08, 2025 (50 days)
Regulating Agency: DWS (REGION 1)
Survey Frequency: 5 YR  -  Visit the Water System Surveys page to see the list of surveys due each year.
Deficiencies:
Category Deficiency Due Date Resolved Date
Management & Operations No operations and maintenance manualDec 12, 2025 Overdue
Management & Operations Emergency response plan not completedDec 12, 2025 Overdue
Monitoring & Reporting MCL violationsDec 12, 2025 Overdue
Well Construction Wellhead not protected from floodingDec 12, 2025 Overdue
Management & Operations Major modifications not approved (plan review)Dec 12, 2025 Dec 19, 2025 - Late
Operator Certification No certified operator at required levelDec 12, 2025 Sep 03, 2025


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More information for this water system: SDWIS ID 5721
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PFAS data are now located on the Chemical Results page.
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