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States → Oklahoma

Community Water System · PWS OK2000453

4T Investors LLC

Liberal, Oklahoma 67901 - drinking water served from groundwater sources to 98 people, tracked in EPA SDWIS and UCMR5.

98
People served
1,737
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 1,737 drinking-water violations at 4T Investors LLC, 1% of them health-based - above the Oklahoma per-system average.

1,737
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
98
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: 4T Investors LLC

4T Investors LLC is a private-owned community water system that delivers drinking water to 98 residents in Liberal, Oklahoma (Beaver County) through 75 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,737 total violations for this system , of which 15 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,710 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 Coliform (TCR), recorded in 350 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%).

4T Investors LLC's 1,737 violations sit above 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
98
Total Violations
1,737
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
75
County
Beaver
School/Daycare
No
MCL Violations
12
Monitoring Violations
1,710
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 350 2015
Chlorine MR 110 2024
Lead and Copper Rule MR 79 2020
Revised Total Coliform Rule MON 61 2022
cis-1,2-Dichloroethylene MR 38 2010
Xylenes, Total MR 38 2010
DICHLOROMETHANE MR 38 2010
p-Dichlorobenzene MR 38 2010
trans-1,2-Dichloroethylene MR 38 2010
1,2-Dichloroethane MR 38 2010
Carbon tetrachloride MR 38 2010
1,2-Dichloropropane MR 38 2010
Trichloroethylene MR 38 2010
1,1,2-Trichloroethane MR 38 2010
Tetrachloroethylene MR 38 2010
CHLOROBENZENE MR 38 2010
Toluene MR 38 2010
Styrene MR 38 2010
1,1-Dichloroethylene MR 38 2010
Ethylbenzene MR 38 2010
o-Dichlorobenzene MR 38 2010
1,1,1-Trichloroethane MR 38 2010
1,2,4-Trichlorobenzene MR 38 2010
Benzene MR 38 2010
Vinyl chloride MR 38 2010
Total Haloacetic Acids (HAA5) MR 35 2022
TTHM MR 35 2022
E. COLI MR 26 2025
Gross Alpha, Excl. Radon and U MR 25 2019
Combined Radium (-226 and -228) MR 25 2019

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 4T Investors LLC.

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 OK2000453 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 E. COLI MR 26 SDWIS / OK2000453 / 3014
2025 Methoxychlor MR 3 SDWIS / OK2000453 / 2015
2025 Toxaphene MR 3 SDWIS / OK2000453 / 2020
2025 Dalapon MR 3 SDWIS / OK2000453 / 2031
2025 Endothall MR 3 SDWIS / OK2000453 / 2033
2025 Glyphosate MR 3 SDWIS / OK2000453 / 2034
2025 Di(2-ethylhexyl) adipate MR 3 SDWIS / OK2000453 / 2035
2025 OXAMYL MR 3 SDWIS / OK2000453 / 2036
2025 Di(2-ethylhexyl) phthalate MR 3 SDWIS / OK2000453 / 2039
2025 Dinoseb MR 3 SDWIS / OK2000453 / 2041
2025 Hexachlorocyclopentadiene MR 3 SDWIS / OK2000453 / 2042
2025 Carbofuran MR 3 SDWIS / OK2000453 / 2046
2025 Heptachlor MR 3 SDWIS / OK2000453 / 2065
2025 Heptachlor epoxide MR 3 SDWIS / OK2000453 / 2067
2025 2,4-D MR 3 SDWIS / OK2000453 / 2105

How 4T Investors LLC Compares

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

Metric 4T Investors LLC Oklahoma avg Federal benchmark
Total violations 1,737 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 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 98 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 4T Investors LLC water safe to drink? ▼
4T Investors LLC (PWS ID: OK2000453) has 1737 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 98 people using Groundwater sources.
How many people does 4T Investors LLC serve? ▼
4T Investors LLC serves 98 people in Liberal, Oklahoma. It is a Private-owned system using Groundwater water sources with 75 service connections.
What type of violations does 4T Investors LLC have? ▼
4T Investors LLC has 1,737 total violations: 15 health-based violations (MCL exceedances or treatment failures), 1,710 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in 4T Investors LLC water? ▼
No PFAS testing data is available for 4T Investors LLC under the EPA's UCMR5 monitoring program.
What water source does 4T Investors LLC use? ▼
4T Investors LLC 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.