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WELLSTON

PWS ID: OK1020724 · WELLSTON, Oklahoma 74881

WELLSTON serves 825 people in WELLSTON, Oklahoma using Surface Water water sources. It has 753 recorded EPA violations, including 257 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: WELLSTON

WELLSTON is a local-owned community water system that delivers drinking water to 825 residents in WELLSTON, Oklahoma (Lincoln County) through 420 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 753 total violations for this system , of which 257 (34%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 476 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 Interim Enhanced Surface Water Treatment Rule, recorded in 199 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. WELLSTON's 753 violations sit above 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
825
Total Violations
753
Health-Based Violations
257
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
420
County
Lincoln
School/Daycare
No
MCL Violations
193
Monitoring Violations
476
Treatment Tech Violations
64

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule MR 199 2016
TTHM MCL 167 2023
TTHM MR 64 2023
CARBON, TOTAL TT 62 2007
Total Haloacetic Acids (HAA5) MR 59 2013
CARBON, TOTAL MR 54 2013
Total Haloacetic Acids (HAA5) MCL 26 2008
Arsenic MR 16 2008
Interim Enhanced Surface Water Treatment Rule Other 12 2015
Coliform (TCR) MR 8 2013
Chlorine MR 7 2015
Consumer Confidence Rule Other 6 2015
Lead and Copper Rule MR 3 2010
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 3 2010
cis-1,2-Dichloroethylene MR 3 2011
DICHLOROMETHANE MR 3 2011
o-Dichlorobenzene MR 3 2011
p-Dichlorobenzene MR 3 2011
1,1-Dichloroethylene MR 3 2011
1,2-Dichloroethane MR 3 2011
Carbon tetrachloride MR 3 2011
1,2-Dichloropropane MR 3 2011
CHLOROBENZENE MR 3 2011
Ethylbenzene MR 3 2011
Styrene MR 3 2011
1,1,2-Trichloroethane MR 3 2011
1,1,1-Trichloroethane MR 3 2011
Trichloroethylene MR 3 2011
Toluene MR 3 2011
Xylenes, Total 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 WELLSTON.

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 OK1020724 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 / OK1020724 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / OK1020724 / 5200
2023 TTHM MCL 167 SDWIS / OK1020724 / 2950
2023 TTHM MR 64 SDWIS / OK1020724 / 2950
2016 Interim Enhanced Surface Water Treatment Rule MR 199 SDWIS / OK1020724 / 0300
2015 Interim Enhanced Surface Water Treatment Rule Other 12 SDWIS / OK1020724 / 0300
2015 Chlorine MR 7 SDWIS / OK1020724 / 0999
2015 Consumer Confidence Rule Other 6 SDWIS / OK1020724 / 7000
2013 Total Haloacetic Acids (HAA5) MR 59 SDWIS / OK1020724 / 2456
2013 CARBON, TOTAL MR 54 SDWIS / OK1020724 / 2920
2013 Coliform (TCR) MR 8 SDWIS / OK1020724 / 3100
2011 cis-1,2-Dichloroethylene MR 3 SDWIS / OK1020724 / 2380
2011 DICHLOROMETHANE MR 3 SDWIS / OK1020724 / 2964
2011 o-Dichlorobenzene MR 3 SDWIS / OK1020724 / 2968
2011 p-Dichlorobenzene MR 3 SDWIS / OK1020724 / 2969

How WELLSTON Compares

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

Metric WELLSTON Oklahoma avg Federal benchmark
Total violations 753 266.8 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 257 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 825 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 WELLSTON water safe to drink? ▼
WELLSTON (PWS ID: OK1020724) has 753 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 825 people using Surface Water sources.
How many people does WELLSTON serve? ▼
WELLSTON serves 825 people in WELLSTON, Oklahoma. It is a Local-owned system using Surface Water water sources with 420 service connections.
What type of violations does WELLSTON have? ▼
WELLSTON has 753 total violations: 257 health-based violations (MCL exceedances or treatment failures), 476 monitoring/reporting violations, and 64 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in WELLSTON water? ▼
No PFAS testing data is available for WELLSTON under the EPA's UCMR5 monitoring program.
What water source does WELLSTON use? ▼
WELLSTON uses Surface Water 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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