OHA Drinking Water Services
OR41
PWS ID: 90556 ---- TRIANGLE LAKE HIGH/ELEM SD 90
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, NO3 = Nitrate, SOC = Synthetic Organic Chemicals, TCR = Total Coliform Rule, VOC = Volatile Organic Chemicals
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
903515394Feb 01, 2026 Feb 28, 2026WTP-A GWR Monthly GW Compliance Report - Late/Nonreporting - 1 1
903515393Jan 01, 2023 Dec 31, 2025EP-A ARS Chemical Late/Nonreporting - 1 1
903515392Jan 01, 2023 Dec 31, 2025EP-A VOC Chemical Late/Nonreporting - 21  Hide analytes
1,1,1-TRICHLOROETHANE
1,1,2-TRICHLOROETHANE
1,1-DICHLOROETHYLENE
1,2,4-TRICHLOROBENZENE
1,2-DICHLOROETHANE
1,2-DICHLOROPROPANE
BENZENE
CARBON TETRACHLORIDE
CHLOROBENZENE
CIS-1,2-DICHLOROETHYLENE
DICHLOROMETHANE
ETHYLBENZENE
O-DICHLOROBENZENE
P-DICHLOROBENZENE
STYRENE
TETRACHLOROETHYLENE
TOLUENE
TRANS-1,2-DICHLOROETHYLENE
TRICHLOROETHYLENE
VINYL CHLORIDE
XYLENES, TOTAL
1
903515371Jan 01, 2023 Dec 31, 2025EP-A SOC Chemical Late/Nonreporting - 29  Show analytes 1
903515342Jan 01, 2025 Dec 31, 2025EP-A NO3 Chemical Late/Nonreporting - 1 5
903515341Oct 01, 2025 Dec 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 1
903515340Jan 01, 2021 Dec 31, 2023DIST-A DBP DBP Late/Nonreporting - 2  Show analytes Returned To Compliance - Jul 09, 2024 1
903515337Sep 01, 2022 Sep 30, 2022WTP-A GWR Monthly GW Compliance Report - Late/Nonreporting - 1 Returned To Compliance - Jan 09, 2023 1 11/15/2022
903515338Sep 01, 2022 Sep 30, 2022EP-A LCR Corrosion Control Late/Nonreporting - 1  Show analyte Returned To Compliance - Nov 01, 2022 1 11/15/2022
903515336Aug 01, 2022 Aug 31, 2022EP-A LCR Corrosion Control Late/Nonreporting - 1  Show analyte Returned To Compliance - Nov 01, 2022 1 11/15/2022
903515335Aug 01, 2022 Aug 31, 2022WTP-A GWR Monthly GW Compliance Report - Late/Nonreporting - 1 Returned To Compliance - Jan 09, 2023 1 11/15/2022
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: 		10
0
10
0
5

Violation history was last updated on 4/10/2026, 3 hours ago.

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