Fairfax, OK Tap Water Quality 2026

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

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

Main Utility: Fairfax PWSID: OK1021204 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 2.30 ppb, 15% of the action level and no violations are open. PFAS has never been sampled at this system.

Fairfax earns a B for water quality

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

Lead: 2.30 ppb — 15% of the federal action level

PFAS never sampled at this system

179 violations since 2015, 96 health-based

No violations currently open

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

0 ppb5 ppb10 ppb15 ppb

Lead level: 2.30 ppb — 15% of the federal action level

✓ Lower lead than 42% of Oklahoma utilities

Population Served

1136

~776 connections

Water Source

Surface water

Drawn from surface water — SDWIS source code SW

Active Violations

179 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

15% of EPA action level

2.30 ppb

Action level: 15 ppb

The 90th-percentile lead result is 2.30 ppb, 15% 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
CARBON, TOTAL	TREATMENT TECHNIQUE	0.8 RATIO	TT	2024	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.7 RATIO	TT	2024	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.68 RATIO	TT	2024	Resolved
TTHM	MCL EXCEEDANCE	0.081 MG/L	0.080 mg/L	2023	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	0.5 RATIO	TT	2023	Resolved
TTHM	MCL EXCEEDANCE	0.1 MG/L	0.080 mg/L	2023	Archived
TTHM	MCL EXCEEDANCE	0.097 MG/L	0.080 mg/L	2023	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.71 RATIO	TT	2023	Archived
TTHM	MCL EXCEEDANCE	0.13 MG/L	0.080 mg/L	2023	Resolved
TTHM	MCL EXCEEDANCE	0.131 MG/L	0.080 mg/L	2023	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.93 RATIO	TT	2023	Resolved
TTHM	MCL EXCEEDANCE	0.129 MG/L	0.080 mg/L	2023	Resolved
TTHM	MCL EXCEEDANCE	0.128 MG/L	0.080 mg/L	2023	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	0.95 RATIO	TT	2023	Resolved
TTHM	MCL EXCEEDANCE	0.117 MG/L	0.080 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.116 MG/L	0.080 mg/L	2022	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	0.94 RATIO	TT	2022	Archived
Gross Alpha, Excl. Radon and U	MONITORING AND REPORTING	—	15 pCi/L	2022	Resolved
Combined Uranium	MONITORING AND REPORTING	—	30 ug/L	2022	Resolved
Combined Radium (-226 and -228)	MONITORING AND REPORTING	—	5 pCi/L	2022	Resolved
Gross Beta Particle Activity	MONITORING AND REPORTING	—	4 mrem/yr	2022	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2022	Resolved
TTHM	MCL EXCEEDANCE	0.109 MG/L	0.080 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.11 MG/L	0.080 mg/L	2022	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.98 RATIO	TT	2022	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2022	Resolved
Gross Alpha, Excl. Radon and U	MONITORING AND REPORTING	—	15 pCi/L	2022	Resolved
Combined Uranium	MONITORING AND REPORTING	—	30 ug/L	2022	Resolved
Combined Radium (-226 and -228)	MONITORING AND REPORTING	—	5 pCi/L	2022	Resolved
Gross Beta Particle Activity	MONITORING AND REPORTING	—	4 mrem/yr	2022	Resolved
TTHM	MCL EXCEEDANCE	0.113 MG/L	0.080 mg/L	2022	Archived
TTHM	MCL EXCEEDANCE	0.112 MG/L	0.080 mg/L	2022	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2022	Resolved
Gross Alpha, Excl. Radon and U	MONITORING AND REPORTING	—	15 pCi/L	2022	Resolved
Combined Uranium	MONITORING AND REPORTING	—	30 ug/L	2022	Resolved
Combined Radium (-226 and -228)	MONITORING AND REPORTING	—	5 pCi/L	2022	Resolved
Gross Beta Particle Activity	MONITORING AND REPORTING	—	4 mrem/yr	2022	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.062 MG/L	0.060 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.118 MG/L	0.080 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.118 MG/L	0.080 mg/L	2022	Archived
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.075 MG/L	0.060 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.079 MG/L	0.060 mg/L	2021	Archived
TTHM	MCL EXCEEDANCE	0.127 MG/L	0.080 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.126 MG/L	0.080 mg/L	2021	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2021	Resolved
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2021	Resolved
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2021	Resolved
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2021	Resolved
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2021	Resolved
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2021	Resolved
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2021	Resolved
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2021	Resolved
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2021	Resolved
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2021	Resolved
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2021	Resolved
Toluene	MONITORING AND REPORTING	—	1 mg/L	2021	Resolved
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2021	Resolved
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2021	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.089 MG/L	0.060 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.094 MG/L	0.060 mg/L	2021	Archived
TTHM	MCL EXCEEDANCE	0.125 MG/L	0.080 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.125 MG/L	0.080 mg/L	2021	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	0.89 RATIO	TT	2021	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.085 MG/L	0.060 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.08 MG/L	0.060 mg/L	2021	Archived
TTHM	MCL EXCEEDANCE	0.091 MG/L	0.080 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.093 MG/L	0.080 mg/L	2021	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	0.66 RATIO	TT	2021	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2021	Resolved
Nitrate-Nitrite	MONITORING AND REPORTING	—	—	2021	Resolved
Gross Alpha, Excl. Radon and U	MONITORING AND REPORTING	—	15 pCi/L	2020	Resolved
Combined Uranium	MONITORING AND REPORTING	—	30 ug/L	2020	Resolved
Combined Radium (-226 and -228)	MONITORING AND REPORTING	—	5 pCi/L	2020	Resolved
Gross Beta Particle Activity	MONITORING AND REPORTING	—	4 mrem/yr	2020	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2020	Resolved
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2020	Resolved
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2020	Resolved
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2020	Resolved
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2020	Resolved
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2020	Resolved
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2020	Resolved
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2020	Resolved
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2020	Resolved
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2020	Resolved
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
Toluene	MONITORING AND REPORTING	—	1 mg/L	2020	Resolved
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2020	Resolved
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2020	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2020	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.093 MG/L	0.080 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.096 MG/L	0.080 mg/L	2020	Archived
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.064 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.082 MG/L	0.060 mg/L	2020	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2020	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	TREATMENT TECHNIQUE	—	—	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.074 MG/L	0.060 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.092 MG/L	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.146 MG/L	0.080 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.146 MG/L	0.080 mg/L	2020	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2020	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.101 MG/L	0.060 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.075 MG/L	0.060 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.15 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.146 MG/L	0.080 mg/L	2019	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2019	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2019	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.115 MG/L	0.060 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.064 MG/L	0.060 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.151 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.141 MG/L	0.080 mg/L	2019	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2019	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.092 MG/L	0.060 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.168 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.171 MG/L	0.080 mg/L	2019	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.088 MG/L	0.060 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.142 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.147 MG/L	0.080 mg/L	2019	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2019	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2018	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2018	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.061 MG/L	0.060 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.126 MG/L	0.080 mg/L	2018	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2018	Archived
TTHM	MCL EXCEEDANCE	0.112 MG/L	0.080 mg/L	2018	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2018	Resolved
TTHM	MCL EXCEEDANCE	0.129 MG/L	0.080 mg/L	2018	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.065 MG/L	0.060 mg/L	2018	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2018	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.108 MG/L	0.080 mg/L	2017	Resolved
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2017	Resolved
TTHM	MCL EXCEEDANCE	0.107 MG/L	0.080 mg/L	2017	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2017	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2017	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2017	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.094 MG/L	0.060 mg/L	2017	Archived
TTHM	MCL EXCEEDANCE	0.097 MG/L	0.080 mg/L	2017	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2017	Archived
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.074 MG/L	0.060 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.085 MG/L	0.080 mg/L	2017	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2017	Resolved
Nitrate-Nitrite	MONITORING AND REPORTING	—	—	2017	Resolved
TTHM	MCL EXCEEDANCE	0.081 MG/L	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.097 MG/L	0.060 mg/L	2016	Archived
CARBON, TOTAL	TREATMENT TECHNIQUE	—	TT	2016	Archived
TTHM	MCL EXCEEDANCE	0.089 MG/L	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.094 MG/L	0.060 mg/L	2016	Archived
TTHM	MCL EXCEEDANCE	0.09 MG/L	0.080 mg/L	2016	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2015	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 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

179 violations are on record since 2015, of which 96 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Fairfax

PWSID OK1021204

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

Population served 1,136

Service connections 776

Systems serving this area 2

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Fairfax tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 2.30 ppb, 15% of the action level.

Does Fairfax 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 Fairfax? ▼

Fairfax (PWSID OK1021204), one of 2 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 2025-12-18. No significant deficiencies were recorded.

What Should Fairfax 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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