Wellston, OK Tap Water Quality 2026

Water quality report for Wellston, OK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Wellston's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Wellston PWSID: OK1020724 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

Wellston earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: not detected

PFAS never sampled at this system

76 violations since 2015, 21 health-based

No violations currently open

Wellston's lead level vs. all Oklahoma community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: Not detected — 0% of the federal action level

✓ Lower lead than % of Oklahoma utilities

Population Served

541

~420 connections

Water Source

Surface water

Drawn from surface water — SDWIS source code SW

Active Violations

76 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

0% of EPA action level

Not detected

Action level: 15 ppb

Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
LEAD AND COPPER RULE REVISIONS	TREATMENT TECHNIQUE	—	—	2024	Resolved
LEAD AND COPPER RULE REVISIONS	REPORTING FAILURE	—	—	2024	Resolved
TTHM	MCL EXCEEDANCE	0.084 MG/L	0.080 mg/L	2023	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2023	Resolved
TTHM	MCL EXCEEDANCE	0.1 MG/L	0.080 mg/L	2023	Resolved
TTHM	MCL EXCEEDANCE	0.1 MG/L	0.080 mg/L	2023	Resolved
TTHM	MCL EXCEEDANCE	0.096 MG/L	0.080 mg/L	2023	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2023–2025	Archived
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2023–2025	Archived
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2023–2025	Archived
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2023–2025	Archived
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2023–2025	Archived
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2023–2025	Archived
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2023–2025	Archived
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2023–2025	Archived
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2023–2025	Archived
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2023–2025	Archived
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2023–2025	Archived
Toluene	MONITORING AND REPORTING	—	1 mg/L	2023–2025	Archived
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2023–2025	Archived
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2023–2025	Archived
TTHM	MCL EXCEEDANCE	0.088 MG/L	0.080 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.083 MG/L	0.080 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.082 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.087 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.087 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.088 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.087 MG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.085 MG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.093 MG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.095 MG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.101 MG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.1 MG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.093 MG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.086 MG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.083 MG/L	0.080 mg/L	2016	Resolved
TTHM	MCL EXCEEDANCE	0.081 MG/L	0.080 mg/L	2016	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2016	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2016	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2016	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2016	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2016	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2016	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Consumer Confidence Rule	OTHER	—	—	2015	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	OTHER	—	—	2015	Resolved

Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

76 violations are on record since 2015, of which 21 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Wellston

PWSID OK1020724

Water source Surface water — Drawn from surface water — SDWIS source code SW

Population served 541

Service connections 420

Systems serving this area 1

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Wellston tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open.

Does Wellston water have PFAS? ▼

This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.

Who supplies water to Wellston? ▼

Wellston (PWSID OK1020724). Surface water. Drawn from surface water — SDWIS source code SW

When was this system last inspected? ▼

It was last inspected on 2026-01-30. No significant deficiencies were recorded.

What Should Wellston Residents Do?

Read your annual water report

Your supplier publishes a Consumer Confidence Report each July covering the prior year.

Check for a lead service line

Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.

Flush before drinking

If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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