OHA Drinking Water Services
OR41
PWS ID: 95757 ---- COLUMBIA BASIN ONION

Public notices are displayed for the last 5 years only.
Group Abbreviations:  NO3 = Nitrate

Public Notices
Violation # or
View Details		 Group Reason for Public NoticeEffective Period Date
Due		 Date
Distributed		 Date
Received
Begin End
6 NO3Chemical MCL based on 1 Sample Jul 01, 2025 Sep 30, 2025 Oct 13, 2025 Overdue
2 NO3Chemical MCL based on Average of Samples Jan 01, 2025 Dec 31, 2025 Jun 27, 2025 May 30, 2025 Jun 11, 2025
View AdvisoryDo Not Drink Water - Nitrate May 30, 2025 Open -- -- --
 


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