OHA Drinking Water Services
OR41
PWS ID: 00958 ---- YONCALLA, CITY OF

Most Recent Water System Survey
Survey Date: Jun 18, 2025
Notification Date: Jul 16, 2025 (28 days)
Regulating Agency: DWS (REGION 2)
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
Cross Connection Annual summary report not issued (CWS)Sep 03, 2025 Overdue
Cross Connection Testing records not current (CWS, NTNC, TNC)Sep 03, 2025 Overdue
Disinfection Minimum CT requirement not met all timesSep 03, 2025 Overdue
Disinfection No means to adequately determine flow rate on contact chamber effluent lineSep 03, 2025 Overdue
Disinfection pH, temperature, and chlorine residual not measured daily at first userSep 03, 2025 Overdue
Disinfection Failure to calculate CT values correctlySep 03, 2025 Overdue
Disinfection No means to adequately determine disinfection contact time under peak flow and minimum storage conditionsSep 03, 2025 Overdue


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More information for this water system: SDWIS ID 4130
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