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Ste. Genevieve, MO Tap Water Quality 2026

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

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

Main Utility: Ste Genevieve Pws PWSID: MO4010710 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. No PFAS was detected.

C

Ste. Genevieve earns a C for water quality

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

Lead: not detected
PFAS tested, none detected
11 violations since 2015, 1 health-based
No violations currently open
Ste. Genevieve's lead level vs. all Missouri community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Missouri utilities
Population Served
4437
~1967 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
0% of EPA action level
Not detected
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
149.2% of EPA action level
1,940 ppb
Action level: 1,300 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Resolved
Groundwater Rule MONITORING AND REPORTING — — 2024 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
Public Notice OTHER — — 2020 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Groundwater Rule MONITORING AND REPORTING — — 2019 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2018 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 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Ste Genevieve Pws
PWSID MO4010710
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 4,437
Service connections 1,967
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Ste. Genevieve tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Ste. Genevieve water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Ste. Genevieve? ▼
Ste Genevieve Pws (PWSID MO4010710). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2026-01-22. Inspectors recorded 2 significant deficiencies.

What Should Ste. Genevieve 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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