OHA Drinking Water Services
OR41
PWS ID: 94063 ---- WEST LINN/WILSONVILLE SD

Most Recent Water System Survey
Survey Date: Aug 07, 2025
Notification Date: Sep 12, 2025 (36 days)
Regulating Agency: CLACKAMAS 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
Operator Certification No certified operator at required levelJan 16, 2026
UV Disinfection Bypass around UV systemJan 16, 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) 08/07/2025 5 YR  * 09/12/2025 (36) CLACKAMAS COUNTY Show details
Sanitary Survey, Finished (SNSV) 09/30/2020 5 YR  * 10/28/2020 (28) CLACKAMAS COUNTY Show details
Sanitary Survey, Finished (SNSV) 06/23/2015 5 YR  * 08/06/2015 (44) CLACKAMAS COUNTY Show details
Sanitary Survey, Finished (SNSV) 06/29/2010 5 YR  * 08/10/2010 (42) CLACKAMAS COUNTY Hide details
  Comments:
Source: -Side port not sealed/screened to prevent entry of contaminants. -Vent on well head lacks screen. Monitoring: -Arsenic sample past due.
Category Deficiency Due Date Resolved Date
Monitoring & Reporting Monitoring not currentNot tracked
Well Construction Sanitary seal and casing not watertightNot tracked
Well Construction No screen on existing well ventNot tracked
Deficiency dates were not tracked prior to 1/1/2014.
Sanitary Survey, Finished (SNSV) 05/26/2005 5 YR  * CLACKAMAS COUNTY Show details
 



More information for this water system: SDWIS ID 1557
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PFAS data are now located on the Chemical Results page.
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