OHA Drinking Water Services
OR41
PWS ID: 90872 ---- NORTHWEST ALUMINUM COMPANY ---- INACTIVE
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  TCR = Total Coliform Rule
Gray shading indicates return to compliance. 

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Violation
Number		Auto-
RTC?		Monitoring Period
Begin
End 		Determination
Date		Facility
ID		 Analyte
Group		 Violation Type - Analyte Count
Show analytes for all violations 		Enforcement Action - Date
Show history 		Points Contact
Report
900592473YJan 01, 2021 Jan 31, 2021Feb 11, 2021 TCR Routine Coliform - Did Not Report ANY - 1 No Longer Required To Comply - Feb 03, 2022 1 2/15/2021
900592468NNov 01, 2020 Nov 30, 2020Dec 03, 2020 TCR Acute MCL for E. coli - 1 No Longer Required To Comply - Feb 03, 2022 10 1/13/2021
SYSTEM SCORE SUMMARY
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Violation history was last updated on 10/30/2025, 11 hours ago.

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More information for this water system: SDWIS ID 799
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