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
Purple shading indicates formal enforcement.  Gray shading indicates return to compliance. 

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Violation
Number		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
600Jan 01, 2025 Dec 31, 2025EP-A NO3 Chemical Late/Nonreporting - 1 5
599Feb 01, 2026 Feb 28, 2026 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
596Jan 01, 2026 Jan 31, 2026WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
592Jan 01, 2026 Jan 31, 2026 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
598Dec 01, 2025 Dec 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Hide analytes
SWTR
TURBIDITY
Bilateral Compliance Agreement Signed - Oct 29, 2025 1
591Dec 01, 2025 Dec 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
590Jan 01, 2025 Dec 31, 2025CH-A GWR Source Assessment Sample - Late/Nonreporting - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
594Nov 01, 2025 Nov 30, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
587Nov 01, 2025 Nov 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
589Oct 01, 2025 Oct 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
584Oct 01, 2025 Oct 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
586Sep 01, 2025 Sep 30, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
583Sep 01, 2025 Sep 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
582Aug 01, 2025 Aug 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
580Aug 01, 2025 Aug 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
579Jul 01, 2025 Jul 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
577Jul 01, 2025 Jul 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
576Jun 01, 2025 Jun 30, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
574Jun 01, 2025 Jun 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
573May 01, 2025 May 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
570May 01, 2025 May 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
569Apr 01, 2025 Apr 30, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 2  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
567Apr 01, 2025 Apr 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
566Mar 01, 2025 Mar 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
563Mar 01, 2025 Mar 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
561Feb 01, 2025 Feb 28, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
557Feb 01, 2025 Feb 28, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
571Feb 23, 2025 Public Notice Late/Nonreporting (Viol # 562) - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
562Feb 23, 2025 Coliform Investigation Nonreporting - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 5
558Jan 01, 2025 Jan 31, 2025WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
548Jan 08, 2025 Jan 19, 2025DIST-A GWR Source Sample - Late/Nonreporting - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
553Dec 01, 2024 Dec 31, 2024WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
547Jan 01, 2024 Dec 31, 2024CH-A GWR Source Assessment Sample - Late/Nonreporting - 1 Bilateral Compliance Agreement Signed - Oct 29, 2025 1
554Nov 01, 2024 Nov 30, 2024WTP-A SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes Bilateral Compliance Agreement Signed - Oct 29, 2025 1
541May 01, 2022 May 31, 2022 TCR Acute MCL for E. coli - 1 Returned To Compliance - Jun 01, 2024 10
540Jan 01, 2021 Dec 31, 2021EP-A NO3 Chemical Late/Nonreporting - 1 Returned To Compliance - Feb 16, 2022 5
539Dec 01, 2021 Dec 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 21, 2022 1
538Apr 01, 2021 Jun 30, 2021 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Aug 12, 2021 1
537Jan 01, 2021 Mar 31, 2021 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Aug 12, 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: 		5
0
5
37
18

Violation history was last updated on 3/25/2026, 23 hours ago.

For questions regarding these violations contact either: