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Bennington, OK Tap Water Quality 2026

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

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

Main Utility: Bryan Co. Rwd #7 PWSID: OK2000705 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 5.60 ppb, 37% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Bennington earns a B for water quality

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

Lead: 5.60 ppb — 37% of the federal action level
PFAS never sampled at this system
35 violations since 2015, 0 health-based
No violations currently open
Bennington's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 5.60 ppb — 37% of the federal action level
✓ Lower lead than 14% of Oklahoma utilities
Population Served
282
~273 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
35 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
37% of EPA action level
5.60 ppb
Action level: 15 ppb
The 90th-percentile lead result is 5.60 ppb, 37% 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)

ContaminantTypeMeasuredLimitPeriodStatus
Endrin MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2022 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2022 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2022 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2022 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2022 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2022 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2022 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2022 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2022 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2022 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2022 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2022 Resolved
LASSO MONITORING AND REPORTING — — 2022 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2022 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2022 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2022 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2022 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2022 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2022 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2016 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2016 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2016 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 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

35 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Bryan Co. Rwd #7
PWSID OK2000705
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 282
Service connections 273
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Bennington tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 5.60 ppb, 37% of the action level.
Does Bennington 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 Bennington? ▼
Bryan Co. Rwd #7 (PWSID OK2000705). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-06-19. No significant deficiencies were recorded.

What Should Bennington Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
2
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.
3
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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