OHA Drinking Water Services
OR41
PWS ID: 01044 ---- TIERRA LINDA ESTATES
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  CCR = Consumer Confidence Report, 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
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
900694547YOct 01, 2025 CCR CCR Certification Late/Nonreporting - 1 1
900694546YJul 01, 2025 CCR CCR Late/Nonreporting - 1 1
900694536YOct 01, 2024 CCR CCR Certification Late/Nonreporting - 1 1 6/24/2025
900694533YJul 01, 2024 CCR CCR Late/Nonreporting - 1 1 6/24/2025
900694540YJan 01, 2024 Dec 31, 2024EP-A NO3 Chemical Late/Nonreporting - 1 Returned To Compliance - Jul 18, 2025 5 6/24/2025
900694576YJan 01, 2023 Dec 31, 2025EP-A SOC Chemical Late/Nonreporting - 29  Hide analytes
1,2-DIBROMO-3-CHLOROPROPANE
2,4,5-TP
2,4-D
ATRAZINE
BENZO(A)PYRENE
BHC-GAMMA
CARBOFURAN
CHLORDANE
DALAPON
DI(2-ETHYLHEXYL) ADIPATE
DI(2-ETHYLHEXYL) PHTHALATE
DINOSEB
DIQUAT
ENDOTHALL
ENDRIN
ETHYLENE DIBROMIDE
GLYPHOSATE
HEPTACHLOR
HEPTACHLOR EPOXIDE
HEXACHLOROBENZENE
HEXACHLOROCYCLOPENTADIENE
LASSO
METHOXYCHLOR
OXAMYL
PENTACHLOROPHENOL
PICLORAM
SIMAZINE
TOTAL POLYCHLORINATED BIPHENYLS (PCB)
TOXAPHENE
1
900694545YJun 01, 2025 Jun 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 18, 2025 1 6/24/2025
900694544YMay 01, 2025 May 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 18, 2025 1 6/24/2025
900694543YApr 01, 2025 Apr 30, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 18, 2025 1 6/24/2025
900694542YMar 01, 2025 Mar 31, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 18, 2025 1 6/24/2025
900694541YFeb 01, 2025 Feb 28, 2025 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 18, 2025 1 6/24/2025
900694539YDec 01, 2024 Dec 31, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 14, 2025 1
900694538YNov 01, 2024 Nov 30, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 14, 2025 1
900694537YOct 01, 2024 Oct 31, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 14, 2025 1
900694535YSep 01, 2024 Sep 30, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 14, 2025 1
900694534YAug 01, 2024 Aug 31, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jan 14, 2025 1
900694532YJun 01, 2024 Jun 30, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 26, 2024 1
900694531YMay 01, 2024 May 31, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 26, 2024 1
900694530YApr 01, 2024 Apr 30, 2024 TCR Routine Coliform - Did Not Report ANY - 1 Returned To Compliance - Jul 26, 2024 1
900694597YJan 01, 2023 Dec 31, 2025EP-A VOC Chemical Late/Nonreporting - 21  Show analytes 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:
6
1
7
0
18

Violation history was last updated on 4/8/2026, 4 hours ago.

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