OHA Drinking Water Services
OR41
PWS ID: 91998 ---- NPS OREGON CAVES NATL MON

Most Recent Water System Survey
Survey date: Jul 11, 2025
Notification date: Jul 23, 2025 (12 days)
Regulating agency: DWS (REGION 2)
Survey frequency: 5 YR  -  Visit the Water System Surveys page to see the list of surveys due each year.
Significant deficiencies and unmet rule requirements:
Category Significant deficiency or unmet rule requirement Due date Resolved date
Management & Operations No operations and maintenance manualSep 10, 2025 Sep 11, 2025 - Late
Monitoring & Reporting No coliform sampling planSep 10, 2025 Sep 11, 2025 - Late
Disinfection Failure to calculate CT values correctlySep 10, 2025 Sep 11, 2025 - Late
Other Treatment Non-NSF approved chemicalsSep 10, 2025 Jul 23, 2025
Bold text indicates a significant deficiency. All others are unmet rule requirements.


 Hide Site Visit History
Water System Site Visit History
Reason Visit date Frequency Next due Notification date
(Days after survey)		 Responsible
agency		 Comments and
significant deficiencies or unmet rule requirements
Sanitary Survey, Finished (SNSV) 07/11/2025 5 YR  * 07/23/2025 (12) REGION 2 Show details
Sanitary Survey, Finished (SNSV) 11/12/2020 5 YR  * 12/08/2020 (26) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 11/12/2020 5 YR 11/12/2025 12/08/2020 (26) REGION 2 No details
Sanitary Survey, Finished (SNSV) 06/17/2015 5 YR  * 07/02/2015 (15) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 06/17/2015 5 YR 06/17/2020 07/02/2015 (15) REGION 2 No details
Sanitary Survey, Finished (SNSV) 04/29/2010 3 YR  * 08/09/2010 (102) JOSEPHINE COUNTY Show details
Sanitary Survey, Finished (SNSV) 08/11/2005 5 YR  * JOSEPHINE COUNTY Show details