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Muddy, MT Tap Water Quality 2026

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

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

Main Utility: Lame Deer Water System PWSID: 083090064 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

B

Muddy earns a B for water quality

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

Lead: not detected
PFAS never sampled at this system
23 violations since 2015, 2 health-based
No violations currently open
Muddy's lead level vs. all Montana community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Montana utilities
Population Served
345
~844 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
23 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
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.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Nitrate-Nitrite MONITORING AND REPORTING — — 2025 Archived
Revised Total Coliform Rule TREATMENT TECHNIQUE — — 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2021 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2021 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2021 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2020–2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019–2020 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2019–2020 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2019–2021 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2019–2021 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2019–2021 Resolved
Radium-226 MONITORING AND REPORTING — — 2019–2021 Resolved
Radium-228 MONITORING AND REPORTING — — 2019–2021 Resolved
E. COLI MONITORING AND REPORTING — 0 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017–2018 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2017–2018 Resolved
Coliform (TCR) MONITORING AND REPORTING — 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

23 violations are on record since 2015, of which 2 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Lame Deer Water System
PWSID 083090064
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 345
Service connections 844
Systems serving this area 1
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Muddy tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Muddy 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 Muddy? ▼
Lame Deer Water System (PWSID 083090064). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2023-11-29. Inspectors recorded 1 significant deficiency.

What Should Muddy 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.

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