OHA Drinking Water Services
OR41
PWS ID: 00305 ---- FOREST GROVE, CITY OF

Most Recent Water System Survey
Survey Date: Jul 11, 2023
Notification Date: Aug 01, 2023 (21 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:
No deficiencies were identified.


 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) 07/11/2023 3 YR  * 08/01/2023 (21) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 07/11/2023 3 YR 07/11/2026 08/01/2023 (21) REGION 1 No details
Sanitary Survey, Finished (SNSV) 08/10/2020 3 YR  * 11/18/2020 (100) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 08/10/2020 3 YR 08/10/2023 11/18/2020 (100) REGION 1 No details
Sanitary Survey, Finished (SNSV) 11/15/2017 3 YR  * 11/17/2017 (2) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 11/15/2017 3 YR 11/15/2020 11/17/2017 (2) REGION 1 No details
Sanitary Survey, Finished (SNSV) 04/25/2014 3 YR  * 05/07/2014 (12) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 04/25/2014 1 YR 04/25/2015 05/07/2014 (12) REGION 1 Hide details
  Comments:
TRTP Results

When average annual raw water turbidity is greater than or equal 10 NTU, is settled water turbidity greater than or equal 10 NTU - YES 2 pts
When average annual raw water turbidity is less than 10 NTU, is settled water turbidity greater than or equal 2 NTU - YES 2 pts
Are optimization goals immediately after backwash met? If no, goal not met: For plants with filter-to-waste capability - Return to service greater than 0.10 NTU 4 pts
Are CT's calculated correctly? No 10 pts

Total of 18 Points. The frequency of TRTP will be annually.

Sanitary Survey, Finished (SNSV) 06/15/2011 3 YR  * 07/28/2011 (43) REGION 1 Show details
Water Treatment Plant Site Visit (TRTP) 06/15/2011 3 YR 06/15/2014 07/28/2011 (43) REGION 1 No details
Sanitary Survey, Finished (SNSV) 05/14/2008 3 YR  * 06/20/2008 (37) REGION 1 No details
Water Treatment Plant Site Visit (TRTP) 05/14/2008 1 YR 05/14/2009 06/20/2008 (37) REGION 1 No details
Sanitary Survey, Finished (SNSV) 11/01/1999 3 YR  * DWP Show details
 



More information for this water system: SDWIS ID 3887
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