OHA Drinking Water Services
OR41
PWS ID: 94533 ---- NORTH PLAINS ARCO
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  NO3 = Nitrate
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
Show history 		Points Contact
Report
903014432Jan 01, 2023 Dec 31, 2023Jan 29, 2024EP-A NO3 Chemical Late/Nonreporting - 1 Returned To Compliance - Feb 02, 2024 5
903014431Jan 01, 2022 Dec 31, 2022Feb 02, 2023EP-A NO3 Chemical Late/Nonreporting - 1 Returned To Compliance - Feb 02, 2024 5
SYSTEM SCORE SUMMARY
Learn about system scores		Unaddressed Points:
Number of years the oldest violation has been unaddressed (n):
System Score:
Points under formal enforcement:
Points RTC'd: 		0
0
0
0
10

Violation history was last updated on 3/27/2026, 46 hours ago.

For questions regarding these violations contact either: