OHA Drinking Water Services
OR41
PWS ID: 95243 ---- DIAMOND LAKE GAS STATION
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  GWR = Ground Water Rule, NO3 = Nitrate, SWTR = Surface Water Treatment Rule, 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
562NFeb 23, 2025 Coliform Investigation Nonreporting - 1 Public Notice Required 5
583YSep 01, 2025 Sep 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
582YAug 01, 2025 Aug 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes 1
580YAug 01, 2025 Aug 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
579YJul 01, 2025 Jul 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes 1
577YJul 01, 2025 Jul 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
576YJun 01, 2025 Jun 30, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes 1
574YJun 01, 2025 Jun 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
573YMay 01, 2025 May 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Hide analytes
SWTR
TURBIDITY
1
570YMay 01, 2025 May 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
569YApr 01, 2025 Apr 30, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes 1
567YApr 01, 2025 Apr 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
566YMar 01, 2025 Mar 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes 1
563YMar 01, 2025 Mar 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
561YFeb 01, 2025 Feb 28, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes 1
557YFeb 01, 2025 Feb 28, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
571NFeb 23, 2025 Public Notice Late/Nonreporting (Viol # 562) - 1 1
558YJan 01, 2025 Jan 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes 1
548NJan 08, 2025 Jan 19, 2025DIST-A GWR Source Sample - Late/Nonreporting - 1 1
553YDec 01, 2024 Dec 31, 2024WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes 1
547NJan 01, 2024 Dec 31, 2024CH-A GWR Source Assessment Sample - Late/Nonreporting - 1 1
554YNov 01, 2024 Nov 30, 2024WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes 1
541NMay 01, 2022 May 31, 2022 TCR Acute MCL for E. coli - 1 Returned To Compliance - Jun 01, 2024 10
540YJan 01, 2021 Dec 31, 2021EP-A NO3 Chemical Late/Nonreporting - 1 Returned To Compliance - Feb 16, 2022 5
539YDec 01, 2021 Dec 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 21, 2022 1
538YApr 01, 2021 Jun 30, 2021 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Aug 12, 2021 1
537YJan 01, 2021 Mar 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Aug 12, 2021 1
536YOct 01, 2020 Dec 31, 2020 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Aug 12, 2021 1
535NJan 01, 2020 Dec 31, 2020CH-A GWR Source Assessment Sample - Late/Nonreporting - 1 Returned To Compliance - Dec 22, 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: 		26
0
26
0
20

Violation history was last updated on 10/24/2025, 69 hours ago.

For questions regarding these violations contact either:

More information for this water system: SDWIS ID 4861
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