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
Disinfection Minimum CT requirement not met all timesJan 15, 2026 *
Disinfection No means to adequately determine flow rate on contact chamber effluent lineJan 15, 2026 *
Disinfection pH, temperature, and chlorine residual not measured daily at first userJan 15, 2026 *
Disinfection Failure to calculate CT values correctlyJan 15, 2026 *
Disinfection No means to adequately determine disinfection contact time under peak flow and minimum storage conditionsJan 15, 2026 *
Cross Connection Annual summary report not issued (CWS)Sep 03, 2025 Oct 09, 2025 - Late
Cross Connection Testing records not current (CWS, NTNC, TNC)Sep 03, 2025 Oct 09, 2025 - Late
* Corrective Action Plan has been submitted for this deficiency.


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More information for this water system: SDWIS ID 4130
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