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
Hide analytes for all violations 		Enforcement Action - Date
Show history 		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
900592465YJan 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
CIS-1,2-DICHLOROETHYLENE
DICHLOROMETHANE
ETHYLBENZENE
MONOCHLOROBENZENE
O-DICHLOROBENZENE
P-DICHLOROBENZENE
STYRENE
TETRACHLOROETHYLENE
TOLUENE
TRANS-1,2-DICHLOROETHYLENE
TRICHLOROETHYLENE
VINYL CHLORIDE
XYLENES
No Longer Required To Comply - Feb 03, 2022 1
900592423YJan 01, 2017 Dec 31, 2019EP-B SOC Chemical Late/Nonreporting - 29
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
900592394YJan 01, 2017 Dec 31, 2019EP-C SOC Chemical Late/Nonreporting - 29
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
900592365YJan 01, 2011 Dec 31, 2019EP-B IOC Chemical Late/Nonreporting - 12
ANTIMONY
BARIUM
BERYLLIUM
CADMIUM
CHROMIUM
CYANIDE
FLUORIDE
MERCURY
NICKEL
SELENIUM
SODIUM
THALLIUM
No Longer Required To Comply - Feb 03, 2022 1
900592353YJan 01, 2011 Dec 31, 2019EP-C IOC Chemical Late/Nonreporting - 12
ANTIMONY
BARIUM
BERYLLIUM
CADMIUM
CHROMIUM
CYANIDE
FLUORIDE
MERCURY
NICKEL
SELENIUM
SODIUM
THALLIUM
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
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
SYSTEM SCORE SUMMARY
Learn about system scores		System scores are not calculated for inactive systems

Violation history was last updated on 12/8/2023, 5 hours ago.

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