OHA Drinking Water Services
OR41
PWS ID: 00953 ---- WILLAMINA, CITY OF

Most Recent Water System Survey
Survey Date: Nov 06, 2025
Notification Date: Dec 17, 2025 (41 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
Distribution System No cutoff switch if upstream pressure drops below 20 psiAug 31, 2026 *
Management & Operations Major modifications not approved (plan review)Aug 31, 2026 *
Disinfection No means to adequately determine disinfection contact time under peak flow and minimum storage conditionsAug 31, 2026 *
* Corrective Action Plan has been submitted for this deficiency.


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