OHA Drinking Water Services
OR41
PWS ID: 90575 ---- HARPER HIGH/ELEMENTARY SD 66
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  ARS = Arsenic, DBP = Disinfection Byproducts, GWR = Ground Water Rule, LCR = Lead & Copper 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
901736837YJan 01, 2023 Dec 31, 2025DIST-A LCR LCR Late/Nonreporting - 1  Show analyte 1
901736832YJun 01, 2025 Jun 30, 2025EP-A ARS Chemical Late/Nonreporting - 1 1
901736829NJul 01, 2023 Sep 30, 2023 ARS Public Notice Late/Nonreporting (Viol # 901736827) - 1 1
901736822NApr 01, 2022 Jun 30, 2022 ARS Public Notice Late/Nonreporting (Viol # 901736820) - 1 1
901736831YSep 01, 2024 Sep 30, 2024EP-A ARS Chemical Late/Nonreporting - 1 Returned To Compliance - Nov 08, 2024 1
901736828NJan 01, 2023 Dec 31, 2023SRC-AA GWR Source Assessment Sample - Late/Nonreporting - 1 Returned To Compliance - Aug 23, 2024 1
901736827NJul 01, 2023 Sep 30, 2023EP-A ARS Chemical MCL based on Average of Samples - 1 Returned To Compliance - Dec 01, 2023 5
901736826YJun 01, 2023 Jun 30, 2023EP-A ARS Chemical Late/Nonreporting - 1 Returned To Compliance - Aug 07, 2023 1
901736825NApr 01, 2023 Jun 30, 2023EP-A ARS Chemical MCL based on Average of Samples - 1 Returned To Compliance - Dec 01, 2023 5
901736824NMar 01, 2023 Mar 31, 2023EP-A ARS Chemical MCL based on Average of Samples - 1 Returned To Compliance - Dec 01, 2023 5
901736823YMar 01, 2023 Mar 31, 2023EP-A ARS Chemical Late/Nonreporting - 1 Returned To Compliance - May 05, 2023 1
901736821YOct 01, 2022 Dec 31, 2022 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 27, 2023 1
901736820NApr 01, 2022 Jun 30, 2022EP-A ARS Chemical MCL based on 1 Sample - 1 Returned To Compliance - Dec 01, 2023 5
901736819YJan 01, 2019 Dec 31, 2021DIST-A DBP DBP Late/Nonreporting - 2  Hide analytes
TOTAL HALOACETIC ACIDS (HAA5)
TTHM
Returned To Compliance - Oct 20, 2023 1
901736817YJul 01, 2021 Sep 30, 2021 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Dec 10, 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: 		4
3
7
0
27

Violation history was last updated on 3/20/2026, 23 hours ago.

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