OHA Drinking Water Services
OR41
PWS ID: 05763 ---- THISTLE HILL WATER CO-OP
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		Auto-
RTC?		Monitoring Period
Begin
End 		Facility
ID		 Analyte
Group		 Violation Type - Analyte Count
Show analytes for all violations 		Enforcement Action - Date
Show history 		Points Contact
Report
3297035NJan 01, 2021 Dec 31, 2021SRC-AA GWR Source Assessment Sample - Late/Nonreporting - 1 No Longer Required To Comply - Dec 31, 2021 1
3297056YOct 01, 2025 Dec 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
3297055YJul 01, 2025 Sep 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
3297054YApr 01, 2025 Jun 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
3297053YJan 01, 2025 Mar 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
3297052YJan 01, 2024 Dec 31, 2024EP-A NO3 Chemical Late/Nonreporting - 1 5
3297051YOct 01, 2024 Dec 31, 2024 TCR Routine Coliform - Did Not Report ANY - 1 1
3297050YJul 01, 2024 Sep 30, 2024 TCR Routine Coliform - Did Not Report ANY - 1 1
3297049YApr 01, 2024 Jun 30, 2024 TCR Routine Coliform - Did Not Report ANY - 1 1
3297048YJan 01, 2024 Mar 31, 2024 TCR Routine Coliform - Did Not Report ANY - 1 1
3297047YJan 01, 2023 Dec 31, 2023EP-A NO3 Chemical Late/Nonreporting - 1 5
3297046YOct 01, 2023 Dec 31, 2023 TCR Routine Coliform - Did Not Report ANY - 1 1
3297045YJul 01, 2023 Sep 30, 2023 TCR Routine Coliform - Did Not Report ANY - 1 1
3297044YApr 01, 2023 Jun 30, 2023 TCR Routine Coliform - Did Not Report ANY - 1 1
3297043YJan 01, 2023 Mar 31, 2023 TCR Routine Coliform - Did Not Report ANY - 1 1
3297042YJan 01, 2022 Dec 31, 2022EP-A NO3 Chemical Late/Nonreporting - 1 5
3297041YOct 01, 2022 Dec 31, 2022 TCR Routine Coliform - Did Not Report ANY - 1 1
3297040YJul 01, 2022 Sep 30, 2022 TCR Routine Coliform - Did Not Report ANY - 1 1
3297039YApr 01, 2022 Jun 30, 2022 TCR Routine Coliform - Did Not Report ANY - 1 1
3297038YJan 01, 2022 Mar 31, 2022 TCR Routine Coliform - Did Not Report ANY - 1 1
3297037YJan 01, 2021 Dec 31, 2021EP-A NO3 Chemical Late/Nonreporting - 1 No Additional Action Needed - Dec 31, 2021 5
3297036YOct 01, 2021 Dec 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1 No Additional Action Needed - Dec 31, 2021 1
3297034YJul 01, 2021 Sep 30, 2021 TCR Routine Coliform - Did Not Report ANY - 1 No Additional Action Needed - Dec 31, 2021 1
3297033YApr 01, 2021 Jun 30, 2021 TCR Routine Coliform - Did Not Report ANY - 1 No Additional Action Needed - Dec 31, 2021 1
3297032YJan 01, 2021 Mar 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1 No Additional Action Needed - Dec 31, 2021 1
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: 		31
4
35
0
10

Violation history was last updated on 3/17/2026, 3 hours ago.

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