OHA Drinking Water Services
OR41
PWS ID: 00823 ---- SILVERTON, CITY OF

Most Recent Water System Survey
Survey Date: Jul 24, 2025
Notification Date: Aug 12, 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.
Deficiencies:
Category Deficiency Due Date Resolved Date
Management & Operations Major modifications not approved (plan review)Dec 31, 2025 *
Operator Certification No protocol for under-certified operatorDec 31, 2025 *
Disinfection No means to adequately determine flow rate on contact chamber effluent lineDec 31, 2026 *
Disinfection No means to adequately determine disinfection contact time under peak flow and minimum storage conditionsDec 31, 2026 *
Cross Connection No cross connection control specialist (CWS ≥300 connections)Sep 30, 2025 Aug 14, 2025
Disinfection Chlorine not measured & recorded as requiredSep 30, 2025 Aug 26, 2025
* Corrective Action Plan has been submitted for this deficiency.


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More information for this water system: SDWIS ID 3910
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