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Louisiana, MO Tap Water Quality 2026

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

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

Main Utility: Louisiana Pws PWSID: MO2010479 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 was sampled but not enough times for a compliance determination.

C

Louisiana earns a C 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 sampled, too few results to judge
38 violations since 2015, 22 health-based
No violations currently open
Louisiana'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
3091
~1534 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
38 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 65 UG/L 0.060 mg/L 2026 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 67.3 UG/L 0.060 mg/L 2025 Archived
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2025 Unaddressed
TTHM MCL EXCEEDANCE 105 UG/L 0.080 mg/L 2025 Resolved
TTHM MCL EXCEEDANCE 114 UG/L 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 61.3 UG/L 0.060 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 111 UG/L 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 62 UG/L 0.060 mg/L 2024 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
TTHM MCL EXCEEDANCE 97 UG/L 0.080 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 83 UG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 81 UG/L 0.080 mg/L 2021 Resolved
Public Notice OTHER — — 2018 Resolved
TTHM MCL EXCEEDANCE 89.5 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 65 UG/L 0.060 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 93 UG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 75 UG/L 0.060 mg/L 2017 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
TTHM MCL EXCEEDANCE 87 UG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 72 UG/L 0.060 mg/L 2017 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2016 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2016 Resolved
Long Term 2 Enhanced Surface Water Treatment Rule OTHER — — 2016 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2016 Resolved
Long Term 2 Enhanced Surface Water Treatment Rule OTHER — — 2016 Resolved
TTHM MCL EXCEEDANCE 82 UG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 87 UG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 92 UG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 95 UG/L 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 69 UG/L 0.060 mg/L 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

38 violations are on record since 2015, of which 22 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Louisiana Pws
PWSID MO2010479
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 3,091
Service connections 1,534
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Louisiana 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 Louisiana water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Louisiana? ▼
Louisiana Pws (PWSID MO2010479), 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 2025-07-31. Inspectors recorded 1 significant deficiency.

What Should Louisiana 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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