OHA Drinking Water Services
OR41
PWS ID: 00719 ---- UMPQUA BASIN WATER ASSOC

Most Recent Water System Survey
Survey Date: Sep 12, 2025
Notification Date: Sep 24, 2025 (12 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
Management & Operations Public notice not issued as requiredNov 12, 2025 Overdue
Treatment Indirect integrity testing does not meet rule requirements Nov 12, 2025 Overdue
Disinfection Minimum CT requirement not met all timesNov 12, 2025 Overdue
Disinfection Failure to calculate CT values correctlyNov 12, 2025 Overdue
Surface Water Treatment For membrane filtration: Direct integrity testing does not meet rule requirementsNov 12, 2025 Overdue
Bold text indicates that resolving this deficiency is a top priority.


 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) 09/12/2025 3 YR  * 09/24/2025 (12) REGION 2 Show details
Sanitary Survey, Finished (SNSV) 11/09/2022 3 YR  * 01/20/2023 (72) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 11/09/2022 3 YR 11/09/2025 01/20/2023 (72) REGION 2 No details
Sanitary Survey, Finished (SNSV) 08/29/2017 5 YR  * 12/19/2017 (112) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 08/29/2017 5 YR 08/29/2022 12/19/2017 (112) REGION 2 No details
Sanitary Survey, Finished (SNSV) 12/20/2012 5 YR  * 07/11/2013 (203) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 12/20/2012 5 YR 12/20/2017 07/11/2013 (203) REGION 2 No details
Sanitary Survey, Finished (SNSV) 08/19/2009 3 YR  * REGION 2 No details
Water Treatment Plant Site Visit (TRTP) 08/19/2009 3 YR 08/19/2012 REGION 2 No details
Sanitary Survey, Finished (SNSV) 04/19/2006 3 YR  * 04/19/2006 (0) REGION 2 No details
Water Treatment Plant Site Visit (TRTP) 04/19/2006 3 YR 04/19/2009 04/19/2006 (0) REGION 2 No details
Water Treatment Plant Site Visit (TRTP) 11/30/2005 3 YR 11/30/2008 11/30/2005 (0) REGION 2 No details
Sanitary Survey, Finished (SNSV) 06/26/2003 3 YR  * DWP Show details
 



More information for this water system: SDWIS ID 3904
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