OHA Drinking Water Services
OR41
PWS ID: 00792 ---- SCAPPOOSE, CITY OF

Most Recent Water System Survey
Survey Date: Oct 15, 2025
Notification Date: Dec 15, 2025 (61 days)
Regulating Agency: DWS (REGION 1)
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 No operations and maintenance manualDec 31, 2026 *
* Corrective Action Plan has been submitted for this deficiency.


 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) 10/15/2025 3 YR  * 12/15/2025 (61) REGION 1 Show details
Sanitary Survey, Finished (SNSV) 11/09/2022 3 YR  * 12/27/2022 (48) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 11/09/2022 3 YR 11/09/2025 12/27/2022 (48) REGION 1 No details
Sanitary Survey, Finished (SNSV) 10/09/2019 3 YR  * 02/28/2020 (142) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 10/09/2019 3 YR 10/09/2022 02/28/2020 (142) REGION 1 No details
Sanitary Survey, Finished (SNSV) 11/03/2016 3 YR  * 11/28/2016 (25) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 11/03/2016 3 YR 11/03/2019 11/28/2016 (25) REGION 1 No details
Sanitary Survey, Finished (SNSV) 07/18/2013 3 YR  * 08/22/2013 (35) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 07/18/2013 3 YR 07/18/2016 08/22/2013 (35) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 01/05/2012 3 YR 01/05/2015 01/19/2012 (14) REGION 1 Show details
Sanitary Survey, Finished (SNSV) 11/04/2010 3 YR  * 12/10/2010 (36) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 11/04/2010 1 YR 11/04/2011 12/10/2010 (36) REGION 1 Hide details
  Comments:
1. Seal the electrical conduit at the Miller Road well #2 wellhead to ensure the sanitary seal is watertight. 2. Seal the open plug to the wellhead at Miller Road Well #1 to make sure the wellhead is watertight. 3. Make sure the vent on the Dutch Canyon Well is screened properly. 4. Incorrect compliance turbidity monitoring location at Keys Road Plant 5. Turbidity profiles immediately following a backwash on each surface water filter plant at Keys Road are needed every quarter. 6. Measure and record the free chlorine residual twice a week from the distribution system, and keep the records on-site for review during future inspections. 7. The contact time through the 1 Million Gallon storage reservoir at the Keys Road facility must be based on a tracer study. 8. As discussed during the survey, the overflows at the High Zone 0.30 Million Gallon (MG) and Keys Road plant 1.0 MG storage reservoirs must have a flap valve, screen or equivalent protection on the outlet. 9. Raw Total Organic Carbon (TOC) must be monitored at least quarterly at the Keys Road treatment facility intake in order to maintain the annual monitoring reduction for Disinfection By Products.
Sanitary Survey, Finished (SNSV) 01/10/2007 3 YR  * 03/07/2007 (56) REGION 1 No details
Sanitary Survey, Finished (SNSV) 07/30/2002 3 YR  * DWP Show details