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COMANCHE CO RWD #2

PWS ID: OK2001604 · ELGIN, Oklahoma 73538-3128

COMANCHE CO RWD #2 serves 1,840 people in ELGIN, Oklahoma using Groundwater water sources. It has 120 recorded EPA violations, including 12 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: COMANCHE CO RWD #2

COMANCHE CO RWD #2 is a local-owned community water system that delivers drinking water to 1,840 residents in ELGIN, Oklahoma (Comanche County) through 772 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 120 total violations for this system , of which 12 (10%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 97 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 10 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Oklahoma, EPA tracks 1,262 public water systems serving 3,699,452 people, with 336,706 cumulative violations and 113,804 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 266.8 violations. COMANCHE CO RWD #2's 120 violations sit below the Oklahoma average. Statewide, 101 of 166 UCMR5-tested systems have reported PFAS detections (60.8%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
1,840
Total Violations
120
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
772
County
Comanche
School/Daycare
No
MCL Violations
10
Monitoring Violations
97
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 10 2004
Lead and Copper Rule MR 6 2009
1,2,4-Trichlorobenzene MR 4 2016
p-Dichlorobenzene MR 4 2016
trans-1,2-Dichloroethylene MR 4 2016
1,2-Dichloroethane MR 4 2016
Carbon tetrachloride MR 4 2016
Trichloroethylene MR 4 2016
Benzene MR 4 2016
Toluene MR 4 2016
Styrene MR 4 2016
Di(2-ethylhexyl) phthalate MR 4 2020
CHLOROBENZENE MR 4 2016
1,1,2-Trichloroethane MR 4 2016
Tetrachloroethylene MR 4 2016
o-Dichlorobenzene MR 4 2016
cis-1,2-Dichloroethylene MR 4 2016
DICHLOROMETHANE MR 4 2016
Xylenes, Total MR 4 2016
Vinyl chloride MR 4 2016
1,1,1-Trichloroethane MR 4 2016
1,1-Dichloroethylene MR 4 2016
1,2-Dichloropropane MR 4 2016
Ethylbenzene MR 4 2016
Coliform (TCR) MR 3 1997
LEAD AND COPPER RULE REVISIONS TT 2 2024
LEAD AND COPPER RULE REVISIONS RPT 2 2024

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for COMANCHE CO RWD #2.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID OK2001604 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oklahoma Drinking Water Authority

Oklahoma's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find OK regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / OK2001604 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / OK2001604 / 5200
2020 Di(2-ethylhexyl) phthalate MR 4 SDWIS / OK2001604 / 2039
2016 1,2,4-Trichlorobenzene MR 4 SDWIS / OK2001604 / 2378
2016 p-Dichlorobenzene MR 4 SDWIS / OK2001604 / 2969
2016 trans-1,2-Dichloroethylene MR 4 SDWIS / OK2001604 / 2979
2016 1,2-Dichloroethane MR 4 SDWIS / OK2001604 / 2980
2016 Carbon tetrachloride MR 4 SDWIS / OK2001604 / 2982
2016 Trichloroethylene MR 4 SDWIS / OK2001604 / 2984
2016 Benzene MR 4 SDWIS / OK2001604 / 2990
2016 Toluene MR 4 SDWIS / OK2001604 / 2991
2016 Styrene MR 4 SDWIS / OK2001604 / 2996
2016 CHLOROBENZENE MR 4 SDWIS / OK2001604 / 2989
2016 1,1,2-Trichloroethane MR 4 SDWIS / OK2001604 / 2985
2016 Tetrachloroethylene MR 4 SDWIS / OK2001604 / 2987

How COMANCHE CO RWD #2 Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric COMANCHE CO RWD #2 Oklahoma avg Federal benchmark
Total violations 120 266.8 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 12 90.2 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.8% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,840 2,931 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,262 regulated public water systems in Oklahoma.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is COMANCHE CO RWD #2 water safe to drink? ▼
COMANCHE CO RWD #2 (PWS ID: OK2001604) has 120 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,840 people using Groundwater sources.
How many people does COMANCHE CO RWD #2 serve? ▼
COMANCHE CO RWD #2 serves 1,840 people in ELGIN, Oklahoma. It is a Local-owned system using Groundwater water sources with 772 service connections.
What type of violations does COMANCHE CO RWD #2 have? ▼
COMANCHE CO RWD #2 has 120 total violations: 12 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in COMANCHE CO RWD #2 water? ▼
No PFAS testing data is available for COMANCHE CO RWD #2 under the EPA's UCMR5 monitoring program.
What water source does COMANCHE CO RWD #2 use? ▼
COMANCHE CO RWD #2 uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial