COMANCHE CO RWD #4

Compiled by PlainEnviro Editorial, Environmental Data Editorial Team · July 13, 2026

PWSID: OK3001654 · Cache, OK · Serves 3,000 people

Health Violations

COMANCHE CO RWD #4 has 112 health-based violations out of 112 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served

3,000

Total Violations

112

Health Violations

112

Source Type

Surface Water

COMANCHE CO RWD #4 (PWSID OK3001654) is a cws water system drawing from a surface water source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 3,000 people in Cache, OK, and is subject to primacy enforcement by the Oklahoma drinking-water program.

The system's federal compliance record contains 112 total violations, with 112 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including Total Trihalomethanes (TTHM), Total Coliform, Gross Alpha. Recorded violations span 1986–2025.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Oklahoma state drinking-water program's public portal.

System Details

EPA ID (PWSID): OK3001654
System Type: CWS
Water Source: Surface Water
Location: Cache, OK
Population Served: 3,000
Health Violations: Yes (112)

What contaminants are in this water system?

Contaminant	Violations	Health-Based
Total Trihalomethanes (TTHM)	108	108
Total Coliform	3	3
Gross Alpha	1	1

Violation History (112)

Contaminant	Type	Health	Date	Enforcement
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	1226
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	1226
Gross Alpha	TT	Yes	Oct 17, 2024	1229
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1219
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1219
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1216
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1216
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1213
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1213
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1210
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1210
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1207
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1207
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1206
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1206
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1201
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1201
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2020	1197
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2020	1197
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2020	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2020	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	1156
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	1156
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	1148
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	1148
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1153
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1153
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1151
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1151
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	1155
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	1135
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2018	1152
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2018	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2018	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	1108
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	1154
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	1151
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	1071
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	1066
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	1220
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	1224
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	1047

Showing 100 of 112 violations.

Frequently Asked Questions

Is COMANCHE CO RWD #4 water safe to drink?

COMANCHE CO RWD #4 has 112 health-based violations out of 112 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses surface water water as its source.

How many people does COMANCHE CO RWD #4 serve?

COMANCHE CO RWD #4 serves 3,000 people in Cache, OK. It is classified as a CWS water system.

What violations does COMANCHE CO RWD #4 have?

COMANCHE CO RWD #4 has 112 total violations on record spanning 1986–2025. 112 are health-based violations involving contaminants exceeding EPA limits.

What contaminants have been found in COMANCHE CO RWD #4 water?

Violations have been recorded for 3 contaminants. The most frequent: Total Trihalomethanes (TTHM), Total Coliform, Gross Alpha.

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About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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System Details

What contaminants are in this water system?

Violation History (112)

Frequently Asked Questions

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About This Data

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