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
Monitoring Period
Begin
End
Determination
Date
Facility
ID
Analyte
Group
Violation Type - Analyte Count
Show analytes for all violations
Enforcement Action - Date
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Points
900592341Jan 01, 2011 Dec 31, 2019Jan 30, 2020EP-B ARS Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1
900592340Jan 01, 2011 Dec 31, 2019Jan 30, 2020EP-C ARS Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1
900592365Jan 01, 2011 Dec 31, 2019Jan 30, 2020EP-B IOC Chemical Late/Nonreporting - 12  Show analytes No Longer Required To Comply - Feb 03, 2022 1
900592353Jan 01, 2011 Dec 31, 2019Jan 30, 2020EP-C IOC Chemical Late/Nonreporting - 12  Show analytes No Longer Required To Comply - Feb 03, 2022 1
900592339Jan 01, 2011 Dec 31, 2019Jan 30, 2020EP-B NO2 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1
900592338Jan 01, 2011 Dec 31, 2019Jan 30, 2020EP-C NO2 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1
900592337Jan 01, 2019 Dec 31, 2019Jan 30, 2020EP-B NO3 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 5
900592336Jan 01, 2019 Dec 31, 2019Jan 30, 2020EP-C NO3 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 5
900592423Jan 01, 2017 Dec 31, 2019Jan 30, 2020EP-B SOC Chemical Late/Nonreporting - 29  Show analytes No Longer Required To Comply - Feb 03, 2022 1
900592394Jan 01, 2017 Dec 31, 2019Jan 30, 2020EP-C SOC Chemical Late/Nonreporting - 29  Hide analytes
2,4,5-TP (SILVEX)
2,4-D
ALACHLOR (LASSO)
ATRAZINE
BENZO (A) PYRENE
BHC-GAMMA (LINDANE)
CARBOFURAN
CHLORDANE
DALAPON
DI(2-ETHYLHEXYL) - ADIPATE
DI(2-ETHYLHEXYL) - PHTHALATE
DIBROMOCHLOROPROPANE (DBCP)
DINOSEB
DIQUAT
ENDOTHALL
ENDRIN
ETHYLENE DIBROMIDE (EDB)
GLYPHOSATE
HEPTACHLOR
HEPTACHLOR EPOXIDE
HEXACHLOROBENZENE
HEXACHLOROCYCLOPENTADIENE
METHOXYCHLOR
OXAMYL (VYDATE)
PENTACHLOROPHENOL
PICLORAM
POLYCHLORINATED BIPHENYLS (PCB)
SIMAZINE
TOXAPHENE
No Longer Required To Comply - Feb 03, 2022 1
900592473Jan 01, 2021 Jan 31, 2021Feb 11, 2021 TCR Routine Coliform - Did Not Report ANY - 1 No Longer Required To Comply - Feb 03, 2022 1
900592468Nov 01, 2020 Nov 30, 2020Dec 03, 2020 TCR Acute MCL for E. coli - 1 No Longer Required To Comply - Feb 03, 2022 10
900592465Jan 01, 2017 Dec 31, 2019Jan 30, 2020EP-C VOC Chemical Late/Nonreporting - 21  Show analytes No Longer Required To Comply - Feb 03, 2022 1
SYSTEM SCORE SUMMARY
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Violation history was last updated on 2/23/2024, 37 hours ago.

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More information for this water system: SDWIS ID 799
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