OHA Drinking Water Services
OR41
PWS ID: 94523 ---- CORVALLIS MARKET
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  GWR = Ground Water Rule, NO3 = Nitrate, TCR = Total Coliform Rule
Gray shading indicates return to compliance. 

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Violation
Number
Monitoring Period
Begin
End
Facility
ID
Analyte
Group
Violation Type - Analyte Count
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Enforcement Action - Date
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Points Contact
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3493622Oct 01, 2025 Dec 31, 2025EP-A NO3 Chemical Late/Nonreporting - 1 5
3493621Jan 01, 2025 Dec 31, 2025SRC-AA GWR Source Assessment Sample - Late/Nonreporting - 1 1
3493620Jul 01, 2025 Sep 30, 2025EP-A NO3 Chemical Late/Nonreporting - 1 5
3493619Jan 01, 2025 Mar 31, 2025EP-A NO3 Chemical Late/Nonreporting - 1 Returned To Compliance - Apr 15, 2025 5
3493618Jul 01, 2024 Sep 30, 2024EP-A NO3 Chemical Late/Nonreporting - 1 Returned To Compliance - Dec 04, 2024 5
3493616Feb 01, 2024 Feb 29, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Apr 23, 2024 1
3493615Dec 01, 2023 Dec 31, 2023 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 19, 2024 1
3493614Nov 01, 2023 Nov 30, 2023 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 19, 2024 1
3493612Jul 01, 2022 Jul 31, 2022 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Oct 20, 2022 1 6/23/2022
3493609Apr 01, 2022 Apr 30, 2022 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Oct 20, 2022 1 6/23/2022
3493608Jan 01, 2022 Jan 31, 2022 TCR Acute MCL for E. coli - 1 Returned To Compliance - Mar 31, 2022 10
SYSTEM SCORE SUMMARY
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Unaddressed Points:
Number of years the oldest violation has been unaddressed (n):
System Score:
Points under formal enforcement:
Points RTC'd:
11
0
11
0
25

Violation history was last updated on 3/23/2026, 22 hours ago.

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