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Farmington, MO Tap Water Quality 2026

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

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

Main Utility: Farmington Pws PWSID: MO4010270 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 4.82 ppb, 32% of the action level and no violations are open. No PFAS was detected.

B

Farmington earns a B for water quality

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

Lead: 4.82 ppb — 32% of the federal action level
PFAS tested, none detected
11 violations since 2015, 7 health-based
No violations currently open
Farmington's lead level vs. all Missouri community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 4.82 ppb — 32% of the federal action level
✓ Lower lead than 14% of Missouri utilities
Population Served
17527
~6255 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
11 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
32% of EPA action level
4.82 ppb
Action level: 15 ppb
The 90th-percentile lead result is 4.82 ppb, 32% 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
Public Notice OTHER — — 2026 Unaddressed
Combined Radium (-226 and -228) MCL EXCEEDANCE 5.53 PCI/L 5 pCi/L 2024–2025 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 5.83 PCI/L 5 pCi/L 2024–2025 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
E. COLI MONITORING AND REPORTING — 0 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 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

11 violations are on record since 2015, of which 7 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Farmington Pws
PWSID MO4010270
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 17,527
Service connections 6,255
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Farmington tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 4.82 ppb, 32% of the action level.
Does Farmington water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Farmington? ▼
Farmington Pws (PWSID MO4010270). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-02-24. No significant deficiencies were recorded.

What Should Farmington Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
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.

Nearby Cities in Missouri

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