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Ironton, MO Tap Water Quality 2026

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

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

Main Utility: Mo American Ironton PWSID: MO4010402 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.00 ppb, 7% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Ironton earns a C for water quality

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

Lead: 1.00 ppb — 7% of the federal action level
PFAS never sampled at this system
12 violations since 2015, 12 health-based
No violations currently open
Ironton's lead level vs. all Missouri community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.00 ppb — 7% of the federal action level
✓ Lower lead than 94% of Missouri utilities
Population Served
1433
~782 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
12 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.00 ppb, 7% 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
TTHM MCL EXCEEDANCE 98 UG/L 0.080 mg/L 2026 Archived
TTHM MCL EXCEEDANCE 95.43 UG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 84.53 UG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 82 UG/L 0.080 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 83.2 UG/L 0.080 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 88.25 UG/L 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 61.45 UG/L 0.060 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 85.88 UG/L 0.080 mg/L 2023 Resolved
TTHM MCL EXCEEDANCE 88 UG/L 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 81 UG/L 0.080 mg/L 2022 Resolved
Stage 1 Disinfectants and Disinfection Byproducts Rule TREATMENT TECHNIQUE — — 2022 Resolved
TTHM MCL EXCEEDANCE 87 UG/L 0.080 mg/L 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

12 violations are on record since 2015, of which 12 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Mo American Ironton
PWSID MO4010402
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 1,433
Service connections 782
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Ironton tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.00 ppb, 7% of the action level.
Does Ironton 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 Ironton? ▼
Mo American Ironton (PWSID MO4010402), 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 2025-06-23. Inspectors recorded 1 significant deficiency.

What Should Ironton 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

Viburnum, Mo Tap Water Quality 2026 Iron Arcadia, Mo Tap Water Quality 2026 Iron Pilot Knob, Mo Tap Water Quality 2026 Iron Annapolis, Mo Tap Water Quality 2026 Iron