OHA Drinking Water Services
OR41
PWS ID: 00134 ---- KELSO WATER ASSN
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  ARS = Arsenic, CCR = Consumer Confidence Report, DBP = Disinfection Byproducts, GWR = Ground Water Rule, LCR = Lead & Copper Rule, NO3 = Nitrate, RAD = Radionuclides, VOC = Volatile Organic Chemicals
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
Hide analytes for all violations 		Enforcement Action - Date
Show history 		Points Contact
Report
900511843YJan 01, 2025 Dec 31, 2025EP-A NO3 Chemical Late/Nonreporting - 1 5 3/25/2026
900511844YJan 01, 2017 Dec 31, 2025EP-A ARS Chemical Late/Nonreporting - 1 1 3/25/2026
900511842YJan 01, 2017 Dec 31, 2025EP-A RAD Chemical Late/Nonreporting - 3
COMBINED RADIUM (-226 & -228)
COMBINED URANIUM
GROSS ALPHA, EXCL. RADON & U
1 3/25/2026
900511841YJan 01, 2023 Dec 31, 2025EP-A VOC Chemical Late/Nonreporting - 21
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 3/25/2026
900511817NJan 01, 2025 Dec 31, 2025SRC-AC GWR Source Assessment Sample - Late/Nonreporting - 1 1 1/22/2026
900511816NJan 01, 2025 Dec 31, 2025SRC-AD GWR Source Assessment Sample - Late/Nonreporting - 1 1 1/22/2026
900511814YJul 01, 2025 Jul 29, 2025 CCR CCR Late/Nonreporting - 1 Returned To Compliance - Jul 29, 2025 1
900511813YJan 01, 2024 Dec 31, 2024DIST-A DBP DBP Late/Nonreporting - 2
TOTAL HALOACETIC ACIDS (HAA5)
TTHM
Returned To Compliance - Oct 10, 2025 1
900511811YJan 01, 2022 Dec 31, 2024DIST-A LCR LCR Late/Nonreporting - 1
LEAD & COPPER RULE
Returned To Compliance - Jun 25, 2025 1
900511810YJul 01, 2024 Sep 26, 2024 CCR CCR Late/Nonreporting - 1 Returned To Compliance - Sep 26, 2024 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: 		10
0
10
0
4

Violation history was last updated on 5/4/2026, 9 hours ago.

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