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| Introduction :: Data Search Options :: Water System Search :: DWS Home :: DWS Rules :: Quick Data Links |
| Most Recent Water System Survey | |||||||||||||||||||||||||||||
| Survey Date: | Jul 12, 2023 | ||||||||||||||||||||||||||||
| Notification Date: | Aug 11, 2023 (30 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: |
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| 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) | 07/12/2023 | 3 YR | * | 08/11/2023 (30) | REGION 1 | Show details |
| Water Treatment Plant Site Visit (TRTP) | 07/12/2023 | 3 YR | 07/12/2026 | 08/11/2023 (30) | REGION 1 | No details |
| Sanitary Survey, Finished (SNSV) | 11/10/2020 | 3 YR | * | 01/05/2021 (56) | REGION 1 | Show details |
| Water Treatment Plant Site Visit (TRTP) | 11/10/2020 | 3 YR | 11/10/2023 | 01/05/2021 (56) | REGION 1 | No details |
| Sanitary Survey, Finished (SNSV) | 07/11/2017 | 3 YR | * | 12/15/2017 (157) | REGION 1 | Show details |
| Water Treatment Plant Site Visit (TRTP) | 07/11/2017 | 6 MN | 01/11/2018 | 12/15/2017 (157) | REGION 1 | No details |
| Sanitary Survey, Finished (SNSV) | 05/01/2014 | 3 YR | * | 05/07/2014 (6) | DWP | Show details |
| Water Treatment Plant Site Visit (TRTP) | 05/01/2014 | 1 YR | 05/01/2015 | 05/07/2014 (6) | DWP | Show details |
| Sanitary Survey, Finished (SNSV) | 07/07/2011 | 3 YR | * | 08/10/2011 (34) | DWP | Show details |
| Water Treatment Plant Site Visit (TRTP) | 07/07/2011 | 3 YR | 07/07/2014 | 08/10/2011 (34) | DWP | No details |
| Sanitary Survey, Finished (SNSV) | 02/28/2008 | 3 YR | * | 07/30/2008 (153) | DWP | Hide details |
| Comments: Deficiencies 1) Turbidimeters Not Calibrated Quarterly. On-line and benchtop turbidimeters must be calibrated according to factory specifications at least quarterly. On-line turbidimeters must have the appropriate amount of water flowing through them in order to accurately measure turbidity. At the time of the survey, it appeared that the combined filter effluent turbidimeter did not have an adequate flow rate. Please ensure that the flow rate is within manufacturer specifications. 2) Turbidity profiles not conducted at least quarterly (OAR 333-061-0076(3)(a)(D)) As discussed, turbidity should be measured from filtered water before, during and after a backwash. I have enclosed some information on conducting a backwash which you may find helpful. Temporary spikes in finished water turbidity are a common occurrence following a backwash. The turbidity profile can be used to determine appropriate backwash and filter-to-waste times, such that these initial spikes are minimized. An optimized backwash process should keep spikes experienced after the filters are brought on-line to levels below 0.3 NTU. Turbidity should drop to below 0.1 NTU within the first 15 minutes. 4) Lead and copper sampling is past due. Lead and Copper tap sampling must be completed every three years. The last round of sampling was completed in 1998. Ten lead and copper tap samples must be taken by September 30, 2008 and the results reported to our office by October 10, 2008. This site visit has not been entered into the deficiency database. | ||||||
| Water Treatment Plant Site Visit (TRTP) | 02/28/2008 | 3 YR | 02/28/2011 | 07/30/2008 (153) | DWP | Show details |
| Water Treatment Plant Site Visit (TRTP) | 04/21/2005 | 3 YR | 04/21/2008 | 04/21/2005 (0) | REGION 3 | No details |
| Sanitary Survey, Finished (SNSV) | 02/14/2004 | 3 YR | * | DWP | Show details | |