WaterQ
Maine State Report All States
Official Status: March 2026

Is Lewiston tap water safe to drink?

✓ Generally Safe
A

Mostly yes — Lewiston scores 96/100.

Safety Score
96
out of 100

Still not sure if you need a filter in Lewiston?

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Lewiston

Maine

View Maine state report Verified: Apr 2026

Is Lewiston tap water safe to drink?

Mostly yes — Lewiston scores 96/100. This report aggregates EPA drinking water data across 1 local system in Lewiston. We found 0 total violations (0 unresolved).

Real-Time Environment

Live: 02:45 PM
0mm Precipitation

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

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 Lewiston?

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 Lewiston? See our analysis.

Baby Formula Safety

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

Homebuyer's Perspective

For those looking to relocate to Lewiston, water quality is a key factor in long-term property maintenance. The high safety score (96/100) suggests lower risk for plumbing corrosion and appliance scaling.

Property Impact: Positive / Stable

Health & Family Safety

Residents should monitor Trichloroethylene (TCE) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.

View Health Risk Glossary →

Score Breakdown for Lewiston

EPA Compliance & Violations 85/100
Contaminant Safety Margin 96%

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

Frequently Asked Questions

Is Lewiston tap water safe to drink?

Mostly yes — Lewiston scores 96/100.

How many water systems serve Lewiston?

Lewiston is served by 1 public water system in our latest EPA-backed dataset.

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

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

What is the water quality score for Lewiston?

The water quality score for Lewiston 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 Lewiston?

The top contaminants detected in Lewiston include Trichloroethylene (TCE), Radium-228, Chloramine. View detailed information on our contaminants page.

Water Quality Score
96/100
Grade
A
Water Systems
1
Population
23,720

Lewiston Water Quality Summary

Lewiston, ME receives a water quality score of 96/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.

Lewiston'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 →

Key Contaminants

Trichloroethylene (TCE) Violation
9.2966 / 5 μg/L
0 μg/L MCL: 5 μg/L
Radium-228 Violation
5.3379 / 5 pCi/L
0 pCi/L MCL: 5 pCi/L
Chloramine
3.9525 / 4 mg/L
0 mg/L MCL: 4 mg/L
Tetrachloroethylene (PCE)
2.4982 / 5 μg/L
0 μg/L MCL: 5 μg/L
Manganese
24.7954 / 50 μg/L
0 μg/L MCL: 50 μg/L
PFOS (Perfluorooctane Sulfonate)
0.0019 / 0.004 μg/L
0 μg/L MCL: 0.004 μg/L
Barium
0.7322 / 2 mg/L
0 mg/L MCL: 2 mg/L
Nitrate
1.4195 / 10 mg/L
0 mg/L MCL: 10 mg/L

Water Systems Serving Lewiston (1)

Related

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