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:  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 		Facility
ID		 Analyte
Group		 Violation Type - Analyte Count
Hide analytes for all violations 		Enforcement Action - Date
Show history 		Points Contact
Report
900592473Jan 01, 2021 Jan 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1 No Longer Required To Comply - Feb 03, 2022 1 2/15/2021
900592468Nov 01, 2020 Nov 30, 2020 TCR Acute MCL for E. coli - 1 No Longer Required To Comply - Feb 03, 2022 10 1/13/2021
900592465Jan 01, 2017 Dec 31, 2019EP-C VOC Chemical Late/Nonreporting - 21
1,1,1-TRICHLOROETHANE
1,1,2-TRICHLOROETHANE
1,1-DICHLOROETHYLENE
1,2,4-TRICHLOROBENZENE
1,2-DICHLOROETHANE
1,2-DICHLOROPROPANE
BENZENE
CARBON TETRACHLORIDE
CHLOROBENZENE
CIS-1,2-DICHLOROETHYLENE
DICHLOROMETHANE
ETHYLBENZENE
O-DICHLOROBENZENE
P-DICHLOROBENZENE
STYRENE
TETRACHLOROETHYLENE
TOLUENE
TRANS-1,2-DICHLOROETHYLENE
TRICHLOROETHYLENE
VINYL CHLORIDE
XYLENES, TOTAL
No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592423Jan 01, 2017 Dec 31, 2019EP-B SOC Chemical Late/Nonreporting - 29
1,2-DIBROMO-3-CHLOROPROPANE
2,4,5-TP
2,4-D
ATRAZINE
BENZO(A)PYRENE
BHC-GAMMA
CARBOFURAN
CHLORDANE
DALAPON
DI(2-ETHYLHEXYL) ADIPATE
DI(2-ETHYLHEXYL) PHTHALATE
DINOSEB
DIQUAT
ENDOTHALL
ENDRIN
ETHYLENE DIBROMIDE
GLYPHOSATE
HEPTACHLOR
HEPTACHLOR EPOXIDE
HEXACHLOROBENZENE
HEXACHLOROCYCLOPENTADIENE
LASSO
METHOXYCHLOR
OXAMYL
PENTACHLOROPHENOL
PICLORAM
SIMAZINE
TOTAL POLYCHLORINATED BIPHENYLS (PCB)
TOXAPHENE
No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592394Jan 01, 2017 Dec 31, 2019EP-C SOC Chemical Late/Nonreporting - 29
1,2-DIBROMO-3-CHLOROPROPANE
2,4,5-TP
2,4-D
ATRAZINE
BENZO(A)PYRENE
BHC-GAMMA
CARBOFURAN
CHLORDANE
DALAPON
DI(2-ETHYLHEXYL) ADIPATE
DI(2-ETHYLHEXYL) PHTHALATE
DINOSEB
DIQUAT
ENDOTHALL
ENDRIN
ETHYLENE DIBROMIDE
GLYPHOSATE
HEPTACHLOR
HEPTACHLOR EPOXIDE
HEXACHLOROBENZENE
HEXACHLOROCYCLOPENTADIENE
LASSO
METHOXYCHLOR
OXAMYL
PENTACHLOROPHENOL
PICLORAM
SIMAZINE
TOTAL POLYCHLORINATED BIPHENYLS (PCB)
TOXAPHENE
No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592365Jan 01, 2011 Dec 31, 2019EP-B IOC Chemical Late/Nonreporting - 12
ANTIMONY, TOTAL
BARIUM
BERYLLIUM, TOTAL
CADMIUM
CHROMIUM
CYANIDE
FLUORIDE
MERCURY
NICKEL
SELENIUM
SODIUM
THALLIUM, TOTAL
No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592353Jan 01, 2011 Dec 31, 2019EP-C IOC Chemical Late/Nonreporting - 12
ANTIMONY, TOTAL
BARIUM
BERYLLIUM, TOTAL
CADMIUM
CHROMIUM
CYANIDE
FLUORIDE
MERCURY
NICKEL
SELENIUM
SODIUM
THALLIUM, TOTAL
No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592341Jan 01, 2011 Dec 31, 2019EP-B ARS Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592340Jan 01, 2011 Dec 31, 2019EP-C ARS Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592339Jan 01, 2011 Dec 31, 2019EP-B NO2 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592338Jan 01, 2011 Dec 31, 2019EP-C NO2 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 1 1/30/2020
900592337Jan 01, 2019 Dec 31, 2019EP-B NO3 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 5 1/30/2020
900592336Jan 01, 2019 Dec 31, 2019EP-C NO3 Chemical Late/Nonreporting - 1 No Longer Required To Comply - Feb 03, 2022 5 1/30/2020
SYSTEM SCORE SUMMARY
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Violation history was last updated on 11/21/2024, 13 hours ago.

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