WaterQ
Montana State Report All States
Official Status: March 2026

Is Lewistown tap water safe to drink?

✓ Generally Safe
A

Mostly yes — Lewistown scores 98/100.

Safety Score
98
out of 100

Still not sure if you need a filter in Lewistown?

Read Decision Guide →

Lewistown

Montana

View Montana state report Verified: Apr 2026

Is Lewistown tap water safe to drink?

Mostly yes — Lewistown scores 98/100. This report aggregates EPA drinking water data across 0 local systems in Lewistown. We found 0 total violations (0 unresolved).

Real-Time Environment

Live: 07:45 PM
0mm Precipitation

☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Lewistown.

Water Quality Impact

✅ Minimal Impact Localized weather conditions may influence test result variability.

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Lewistown?

Requirement Status
Optional
🟢
💡

Expert Advice

Your water quality is excellent. Standard filtration is optional but can further enhance taste.

Buying a Filter?

Should you buy a water purifier in Lewistown? See our analysis.

Baby Formula Safety

Is Lewistown tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Lewistown, water quality is a key factor in long-term property maintenance. The high safety score (98/100) suggests lower risk for plumbing corrosion and appliance scaling.

Property Impact: Positive / Stable

Health & Family Safety

Current records show no major contaminant spikes, making Lewistown a preferred choice for health-conscious families.

View Health Risk Glossary →

Score Breakdown for Lewistown

EPA Compliance & Violations 85/100
Contaminant Safety Margin 98%

*Scores are calculated using weighted EPA monitoring data from the past 5 years.

Frequently Asked Questions

Is Lewistown tap water safe to drink?

Mostly yes — Lewistown scores 98/100.

How many water systems serve Lewistown?

Lewistown is served by 0 public water systems in our latest EPA-backed dataset.

How can I check water quality for my exact address in Lewistown?

Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Lewistown.

What is the water quality score for Lewistown?

The water quality score for Lewistown is N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

What are the top contaminants in Lewistown?

Current contaminant data for Lewistown is being updated. Check back soon or search your specific address for the latest results.

Water Quality Score
98/100
Grade
A
Water Systems
1
Population
5,923

Lewistown Water Quality Summary

Lewistown, MT receives a water quality score of 98/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.

Lewistown's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →

Water Systems Serving Lewistown (0)

Water system data coming soon for Lewistown.

Related

Compare Lewistown water quality: View all states · Contaminant library · How we score water quality