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

Violations are displayed for the last 5 years only.
Group Abbreviations:  ARS = Arsenic, IOC = Inorganic Chemicals, NO2 = Nitrite, NO3 = Nitrate, SOC = Synthetic Organic Chemicals, TCR = Total Coliform Rule, VOC = Volatile Organic Chemicals
Gray shading indicates return to compliance. 

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Violation
Number
Auto-
RTC?
Monitoring Period
Begin
End
Facility
ID
Analyte
Group
Violation Type - Analyte Count
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Enforcement Action - Date
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Points
900592473YJan 01, 2021 Jan 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1
No Longer Required To Comply - Feb 03, 2022
1
900592468NNov 01, 2020 Nov 30, 2020 TCR Acute MCL for E. coli - 1
No Longer Required To Comply - Feb 03, 2022
10
900592337YJan 01, 2019 Dec 31, 2019EP-B NO3 Chemical Late/Nonreporting - 1
No Longer Required To Comply - Feb 03, 2022
5
900592336YJan 01, 2019 Dec 31, 2019EP-C NO3 Chemical Late/Nonreporting - 1
No Longer Required To Comply - Feb 03, 2022
5
900592465YJan 01, 2017 Dec 31, 2019EP-C VOC Chemical Late/Nonreporting - 21  Show analytes
No Longer Required To Comply - Feb 03, 2022
1
900592423YJan 01, 2017 Dec 31, 2019EP-B SOC Chemical Late/Nonreporting - 29  Show analytes
No Longer Required To Comply - Feb 03, 2022
1
900592394YJan 01, 2017 Dec 31, 2019EP-C SOC Chemical Late/Nonreporting - 29  Show analytes
No Longer Required To Comply - Feb 03, 2022
1
900592365YJan 01, 2011 Dec 31, 2019EP-B IOC Chemical Late/Nonreporting - 12  Show analytes
No Longer Required To Comply - Feb 03, 2022
1
900592353YJan 01, 2011 Dec 31, 2019EP-C IOC Chemical Late/Nonreporting - 12  Show analytes
No Longer Required To Comply - Feb 03, 2022
1
900592341YJan 01, 2011 Dec 31, 2019EP-B ARS Chemical Late/Nonreporting - 1
No Longer Required To Comply - Feb 03, 2022
1
900592340YJan 01, 2011 Dec 31, 2019EP-C ARS Chemical Late/Nonreporting - 1
No Longer Required To Comply - Feb 03, 2022
1
900592339YJan 01, 2011 Dec 31, 2019EP-B NO2 Chemical Late/Nonreporting - 1
No Longer Required To Comply - Feb 03, 2022
1
900592338YJan 01, 2011 Dec 31, 2019EP-C NO2 Chemical Late/Nonreporting - 1
No Longer Required To Comply - Feb 03, 2022
1
SYSTEM SCORE SUMMARY
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Violation history was last updated on 2/21/2024, 11 hours ago.

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