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Community Water System · PWS OK4005577

Hilltop MHP

Oklahoma City, Oklahoma 73130 - drinking water served from groundwater sources to 125 people, tracked in EPA SDWIS and UCMR5.

125
People served
262
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 262 drinking-water violations at Hilltop MHP, 1% of them health-based - below the Oklahoma per-system average.

262
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
125
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hilltop MHP

Hilltop MHP is a private-owned community water system that delivers drinking water to 125 residents in Oklahoma City, Oklahoma (Oklahoma County) through 54 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 262 total violations for this system , of which 3 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 222 monitoring and reporting violations are on file. The most recent violation on record dates to 2014.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 10 violations (MR). 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%).

Hilltop MHP's 262 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
125
Total Violations
262
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
54
County
Oklahoma
School/Daycare
No
MCL Violations
3
Monitoring Violations
222
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 10 2008
Lead and Copper Rule MR 8 2001
Xylenes, Total MR 8 2014
DICHLOROMETHANE MR 8 2014
o-Dichlorobenzene MR 8 2014
trans-1,2-Dichloroethylene MR 8 2014
1,2-Dichloroethane MR 8 2014
1,1,1-Trichloroethane MR 8 2014
Carbon tetrachloride MR 8 2014
1,2-Dichloropropane MR 8 2014
Trichloroethylene MR 8 2014
1,1,2-Trichloroethane MR 8 2014
Tetrachloroethylene MR 8 2014
CHLOROBENZENE MR 8 2014
Benzene MR 8 2014
Toluene MR 8 2014
Ethylbenzene MR 8 2014
Styrene MR 8 2014
cis-1,2-Dichloroethylene MR 8 2014
Vinyl chloride MR 8 2014
1,1-Dichloroethylene MR 8 2014
1,2,4-Trichlorobenzene MR 8 2014
p-Dichlorobenzene MR 8 2014
Chromium MR 3 2011
Fluoride MR 3 2011
Nickel MR 3 2011
Beryllium, Total MR 3 2011
Coliform (TCR) MCL 3 1997
Selenium MR 3 2011
Barium MR 3 2011

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 Hilltop MHP.

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 OK4005577 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
2014 Xylenes, Total MR 8 SDWIS / OK4005577 / 2955
2014 DICHLOROMETHANE MR 8 SDWIS / OK4005577 / 2964
2014 o-Dichlorobenzene MR 8 SDWIS / OK4005577 / 2968
2014 trans-1,2-Dichloroethylene MR 8 SDWIS / OK4005577 / 2979
2014 1,2-Dichloroethane MR 8 SDWIS / OK4005577 / 2980
2014 1,1,1-Trichloroethane MR 8 SDWIS / OK4005577 / 2981
2014 Carbon tetrachloride MR 8 SDWIS / OK4005577 / 2982
2014 1,2-Dichloropropane MR 8 SDWIS / OK4005577 / 2983
2014 Trichloroethylene MR 8 SDWIS / OK4005577 / 2984
2014 1,1,2-Trichloroethane MR 8 SDWIS / OK4005577 / 2985
2014 Tetrachloroethylene MR 8 SDWIS / OK4005577 / 2987
2014 CHLOROBENZENE MR 8 SDWIS / OK4005577 / 2989
2014 Benzene MR 8 SDWIS / OK4005577 / 2990
2014 Toluene MR 8 SDWIS / OK4005577 / 2991
2014 Ethylbenzene MR 8 SDWIS / OK4005577 / 2992

How Hilltop MHP Compares

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

Metric Hilltop MHP Oklahoma avg Federal benchmark
Total violations 262 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 125 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 Hilltop MHP water safe to drink? ▼
Hilltop MHP (PWS ID: OK4005577) has 262 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 125 people using Groundwater sources.
How many people does Hilltop MHP serve? ▼
Hilltop MHP serves 125 people in Oklahoma City, Oklahoma. It is a Private-owned system using Groundwater water sources with 54 service connections.
What type of violations does Hilltop MHP have? ▼
Hilltop MHP has 262 total violations: 3 health-based violations (MCL exceedances or treatment failures), 222 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hilltop MHP water? ▼
No PFAS testing data is available for Hilltop MHP under the EPA's UCMR5 monitoring program.
What water source does Hilltop MHP use? ▼
Hilltop MHP 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.