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Maysville, MO Tap Water Quality 2026

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

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

Main Utility: Maysville Pws PWSID: MO1010510 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 4.42 ppb, 29% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Maysville earns a B for water quality

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

Lead: 4.42 ppb — 29% of the federal action level
PFAS never sampled at this system
41 violations since 2015, 33 health-based
No violations currently open
Maysville's lead level vs. all Missouri community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 4.42 ppb — 29% of the federal action level
✓ Lower lead than 17% of Missouri utilities
Population Served
550
~461 connections
Water Source
Groundwater
Purchased groundwater from another system — SDWIS source code GWP
Active Violations
0
41 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
29% of EPA action level
4.42 ppb
Action level: 15 ppb
The 90th-percentile lead result is 4.42 ppb, 29% 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
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 105 UG/L 0.060 mg/L 2026 Archived
TTHM MCL EXCEEDANCE 115 UG/L 0.080 mg/L 2026 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 96.9 UG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 114.4 UG/L 0.080 mg/L 2025 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 78.15 UG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 104.88 UG/L 0.080 mg/L 2025 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Chlorite MCL EXCEEDANCE 1.2 MG/L 1.0 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 94 UG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 98 UG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 96 UG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 61 UG/L 0.060 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 98 UG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 64 UG/L 0.060 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 92 UG/L 0.080 mg/L 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
TTHM MCL EXCEEDANCE 91 UG/L 0.080 mg/L 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
TTHM MCL EXCEEDANCE 94 UG/L 0.080 mg/L 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2015 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2015 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2015 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2015 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 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

41 violations are on record since 2015, of which 33 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Maysville Pws
PWSID MO1010510
Water source Groundwater — Purchased groundwater from another system — SDWIS source code GWP
Population served 550
Service connections 461
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Maysville tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 4.42 ppb, 29% of the action level.
Does Maysville 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 Maysville? ▼
Maysville Pws (PWSID MO1010510), one of 2 systems serving this area. Groundwater. Purchased groundwater from another system — SDWIS source code GWP
When was this system last inspected? ▼
It was last inspected on 2026-01-15. No significant deficiencies were recorded.

What Should Maysville 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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