OHA Drinking Water Services
OR41
PWS ID: 95363 ---- USFWS TUALATIN RIVER NATL WLR

Most Recent Water System Survey
Survey Date: Aug 26, 2025
Notification Date: Sep 04, 2025 (9 days)
Regulating Agency: WASHINGTON COUNTY
Survey Frequency: 5 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 Testing records not current (CWS, NTNC, TNC)Jan 08, 2026
Monitoring & Reporting No coliform sampling planJan 08, 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) 08/26/2025 5 YR  * 09/04/2025 (9) WASHINGTON COUNTY Hide details
 
Category Deficiency Due Date Resolved Date
Cross Connection Testing records not current (CWS, NTNC, TNC)Jan 08, 2026
Monitoring & Reporting No coliform sampling planJan 08, 2026
Sanitary Survey, Finished (SNSV) 12/01/2020 5 YR  * 12/07/2020 (6) WASHINGTON COUNTY Show details
Sanitary Survey, Finished (SNSV) 12/14/2015 5 YR  * 03/30/2016 (107) WASHINGTON COUNTY Show details
Sanitary Survey, Finished (SNSV) 10/23/2008 5 YR  * 10/27/2008 (4) WASHINGTON COUNTY No details
 



More information for this water system: SDWIS ID 5032
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PFAS data are now located on the Chemical Results page.
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