OHA Drinking Water Services
OR41
PWS ID: 00239 ---- LONDON WATER CO-OP

Most Recent Water System Survey
Survey Date: Nov 05, 2025
Notification Date: Dec 12, 2025 (37 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)Jan 30, 2026
Management & Operations Emergency response plan not completedJan 30, 2026
Management & Operations Annual CCR not submitted (CWS)Jan 30, 2026
Operator Certification No protocol for under-certified operatorJan 30, 2026
Treatment UV reactors not monitored as requiredJan 30, 2026
Disinfection Chlorine not measured & recorded as requiredJan 30, 2026
Disinfection pH, temperature, and chlorine residual not measured daily at first userJan 30, 2026
Surface Water Treatment Turbidity standards not metJan 30, 2026
Surface Water Treatment Turbidimeters not calibrated per manufacturer or at least quarterlyJan 30, 2026
UV Disinfection Bypass around UV systemJan 30, 2026


 Hide Site Visit History
Water System Site Visit History
Reason Visit Date Frequency Next Due Notification Date
(Days after survey)		 Responsible
Agency		 Comments and
Deficiencies
Sanitary Survey, Finished (SNSV) 11/05/2025 3 YR  * 12/12/2025 (37) REGION 2 Show details
Sanitary Survey, Finished (SNSV) 10/14/2022 3 YR  * 02/02/2023 (111) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 10/14/2022 6 MN 04/14/2023 02/02/2023 (111) REGION 2 No details
Sanitary Survey, Finished (SNSV) 09/11/2019 3 YR  * 11/20/2019 (70) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 09/11/2019 6 MN 03/11/2020 11/20/2019 (70) REGION 2 No details
Sanitary Survey, Finished (SNSV) 07/07/2016 3 YR  * 07/14/2016 (7) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 07/07/2016 1 YR 07/07/2017 07/14/2016 (7) REGION 2 No details
Sanitary Survey, Finished (SNSV) 05/28/2013 3 YR  * 08/29/2013 (93) REGION 2 No details
Water Treatment Plant Site Visit (TRTP) 05/28/2013 6 MN 11/28/2013 08/29/2013 (93) REGION 2 No details
Water Treatment Plant Site Visit (TRTP) 12/29/2010 6 MN 06/29/2011 03/02/2011 (63) REGION 2 Show details
Sanitary Survey, Finished (SNSV) 03/10/2010 3 YR  * 04/20/2010 (41) REGION 2 No details
Water Treatment Plant Site Visit (TRTP) 03/10/2010 6 MN 09/10/2010 04/20/2010 (41) REGION 2 No details
Sanitary Survey, Finished (SNSV) 04/17/2007 3 YR  * 05/22/2007 (35) REGION 2 No details
Water Treatment Plant Site Visit (TRTP) 04/17/2007 6 MN 10/17/2007 05/22/2007 (35) REGION 2 No details
Sanitary Survey, Finished (SNSV) 03/28/2002 3 YR  * DWP Hide details
  Comments:
LOC=F;RR1=N/A;RR2=N/A;County=Lane;ContactWith=;Summary=;Details=J POTTS from the state completed the assistance action on 03/28/2002. . The SeqKey from the SWS database is -199974977;ActionNeeded=N/A
This site visit has not been entered into the deficiency database.

 



More information for this water system: SDWIS ID 3944
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