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.


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