McAlester, OK Tap Water Quality 2026

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

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

Main Utility: Mcalester Pwa PWSID: OK1020609 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 3.60 ppb, 24% of the action level and no violations are open. No PFAS was detected.

McAlester earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 3.60 ppb — 24% of the federal action level

PFAS tested, none detected

73 violations since 2015, 59 health-based

No violations currently open

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

0 ppb5 ppb10 ppb15 ppb

Lead level: 3.60 ppb — 24% of the federal action level

✓ Lower lead than 24% of Oklahoma utilities

Population Served

7872

~7545 connections

Water Source

Surface water

Drawn from surface water — SDWIS source code SW

Active Violations

73 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

24% of EPA action level

3.60 ppb

Action level: 15 ppb

The 90th-percentile lead result is 3.60 ppb, 24% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2026	Archived
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Archived
TTHM	MCL EXCEEDANCE	0.087 MG/L	0.080 mg/L	2025	Archived
TTHM	MCL EXCEEDANCE	0.081 MG/L	0.080 mg/L	2025	Archived
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Nitrate-Nitrite	MONITORING AND REPORTING	—	—	2025	Archived
LEAD AND COPPER RULE REVISIONS	TREATMENT TECHNIQUE	—	—	2024	Resolved
LEAD AND COPPER RULE REVISIONS	REPORTING FAILURE	—	—	2024	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.99 RATIO	TT	2023	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2023	Resolved
TTHM	MCL EXCEEDANCE	0.086 MG/L	0.080 mg/L	2023	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.94 RATIO	TT	2023	Resolved
TTHM	MCL EXCEEDANCE	0.085 MG/L	0.080 mg/L	2023	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.92 RATIO	TT	2023	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2022	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.93 RATIO	TT	2022	Resolved
TTHM	MCL EXCEEDANCE	0.082 MG/L	0.080 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.084 MG/L	0.080 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.083 MG/L	0.080 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.082 MG/L	0.080 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.065 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.062 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.069 MG/L	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.082 MG/L	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.075 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.068 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.07 MG/L	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.084 MG/L	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.072 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.069 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.068 MG/L	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.081 MG/L	0.080 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.082 MG/L	0.080 mg/L	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2020	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2019	Resolved
Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2019	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2019	Resolved
Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2018	Resolved
Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2018	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2018	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2018	Resolved
Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2018	Resolved
TTHM	MCL EXCEEDANCE	0.083 MG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.081 MG/L	0.080 mg/L	2018	Resolved
Bromate	MONITORING AND REPORTING	—	0.010 mg/L	2017	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2017	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2017	Resolved
Bromate	MONITORING AND REPORTING	—	0.010 mg/L	2017	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2017	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2017	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2016	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2016	Resolved
TTHM	MCL EXCEEDANCE	0.083 MG/L	0.080 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.062 MG/L	0.060 mg/L	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2015	Resolved
Coliform (TCR)	MCL EXCEEDANCE	—	5% of samples	2015	Resolved
TTHM	MCL EXCEEDANCE	0.091 MG/L	0.080 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.062 MG/L	0.060 mg/L	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2015	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2015	Resolved
TTHM	MCL EXCEEDANCE	0.082 MG/L	0.080 mg/L	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

73 violations are on record since 2015, of which 59 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Mcalester Pwa

PWSID OK1020609

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

Population served 7,872

Service connections 7,545

Systems serving this area 5

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is McAlester tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 3.60 ppb, 24% of the action level.

Does McAlester water have PFAS? ▼

It was tested for the six regulated PFAS compounds and none were detected.

Who supplies water to McAlester? ▼

Mcalester Pwa (PWSID OK1020609), one of 5 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW

When was this system last inspected? ▼

It was last inspected on 2026-03-25. No significant deficiencies were recorded.

What Should McAlester 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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