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Community Water System · PWS OK5002135

Carriage Hills

Afton, Oklahoma 74331 - drinking water served from groundwater sources to 160 people, tracked in EPA SDWIS and UCMR5.

160
People served
73
EPA violations
2
Health-based
Untested
UCMR5 result

The verdict

EPA records 73 drinking-water violations at Carriage Hills, 3% of them health-based - below the Oklahoma per-system average.

73
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
160
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Carriage Hills

Carriage Hills is a private-owned community water system that delivers drinking water to 160 residents in Afton, Oklahoma (Delaware County) through 59 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 73 total violations for this system , of which 2 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 58 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 11 violations (Other). 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. Statewide, 101 of 166 UCMR5-tested systems have reported PFAS detections (60.8%).

Carriage Hills's 73 violations sit below the Oklahoma average.

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
160
Total Violations
73
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
59
County
Delaware
School/Daycare
No
MCL Violations
0
Monitoring Violations
58
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 11 2025
Gross Alpha, Excl. Radon and U MR 3 2004
Combined Uranium MR 3 2004
Lead and Copper Rule MR 3 2024
Coliform (TCR) MR 3 2009
Combined Radium (-226 and -228) MR 3 2004
Gross Beta Particle Activity MR 3 2004
1,2,4-Trichlorobenzene MR 2 2002
1,2-Dichloropropane MR 2 2002
1,1,2-Trichloroethane MR 2 2002
CHLOROBENZENE MR 2 2002
Benzene MR 2 2002
Toluene MR 2 2002
Ethylbenzene MR 2 2002
cis-1,2-Dichloroethylene MR 2 2002
Xylenes, Total MR 2 2002
o-Dichlorobenzene MR 2 2002
1,1-Dichloroethylene MR 2 2002
p-Dichlorobenzene MR 2 2002
LEAD AND COPPER RULE REVISIONS TT 2 2024
Trichloroethylene MR 2 2002
Vinyl chloride MR 2 2002
trans-1,2-Dichloroethylene MR 2 2002
Tetrachloroethylene MR 2 2002
DICHLOROMETHANE MR 2 2002
LEAD AND COPPER RULE REVISIONS RPT 2 2024
1,1,1-Trichloroethane MR 2 2002
Styrene MR 2 2002
Carbon tetrachloride MR 2 2002

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 Carriage Hills.

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 OK5002135 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
2025 Consumer Confidence Rule Other 11 SDWIS / OK5002135 / 7000
2024 Lead and Copper Rule MR 3 SDWIS / OK5002135 / 5000
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / OK5002135 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / OK5002135 / 5200
2009 Coliform (TCR) MR 3 SDWIS / OK5002135 / 3100
2004 Gross Alpha, Excl. Radon and U MR 3 SDWIS / OK5002135 / 4000
2004 Combined Uranium MR 3 SDWIS / OK5002135 / 4006
2004 Combined Radium (-226 and -228) MR 3 SDWIS / OK5002135 / 4010
2004 Gross Beta Particle Activity MR 3 SDWIS / OK5002135 / 4100
2002 1,2,4-Trichlorobenzene MR 2 SDWIS / OK5002135 / 2378
2002 1,2-Dichloropropane MR 2 SDWIS / OK5002135 / 2983
2002 1,1,2-Trichloroethane MR 2 SDWIS / OK5002135 / 2985
2002 CHLOROBENZENE MR 2 SDWIS / OK5002135 / 2989
2002 Benzene MR 2 SDWIS / OK5002135 / 2990
2002 Toluene MR 2 SDWIS / OK5002135 / 2991

How Carriage Hills Compares

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

Metric Carriage Hills Oklahoma avg Federal benchmark
Total violations 73 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 2 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 160 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Carriage Hills water safe to drink? ▼
Carriage Hills (PWS ID: OK5002135) has 73 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 160 people using Groundwater sources.
How many people does Carriage Hills serve? ▼
Carriage Hills serves 160 people in Afton, Oklahoma. It is a Private-owned system using Groundwater water sources with 59 service connections.
What type of violations does Carriage Hills have? ▼
Carriage Hills has 73 total violations: 2 health-based violations (MCL exceedances or treatment failures), 58 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Carriage Hills water? ▼
No PFAS testing data is available for Carriage Hills under the EPA's UCMR5 monitoring program.
What water source does Carriage Hills use? ▼
Carriage Hills 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.
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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.