Is Lewiston tap water safe to drink?

Yes with good quality

Lewiston's tap water meets all EPA standards and scores well on our analysis. It is generally safe to drink though filtration can improve taste and provide extra precaution.

85/100
Purity Score
1
Issues Found
0.6 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Lewiston

Arsenic Approaching Limit (0.1 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Lewiston
Maine

42,400,424,104,243 · Lake Auburn

Lewiston Tap Water Report: Safety and Contaminants

Low Risk Updated March 2026 36,592 residents
See Best Filters for Lewiston
85
Purity Score

Water quality in Lewiston, Maine is evaluated here using public utility data and independent testing. The report includes a purity score, contaminant breakdown, and tailored filter recommendations.

Contaminant Levels

PFAS
ND
Lead
0.8 ppb
Nitrate
0.1 mg/L
Arsenic
0.1 mg/L
Hardness
0.6 gpg

Health Insights

  • 1
    Lewiston's water meets current EPA standards. Filtration can improve taste and provide extra safety.

Score

85 /100
Excellent
"Good" threshold (70)

Lewiston tap water is sourced from Lake Auburn and treated by Lewiston and Auburn Water Pollution Control Authority. Overall purity score: 85/100 (Excellent). Updated for 2026.

Fix Your Water

Best filters matched to Lewiston's 1 issue.

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Explore Lewiston Water Data

Forever Chemicals in LewistonPFAS water report
Lead Risk in LewistonLead water report
Lewiston Hardness ReportScale and minerals
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Lewiston Water FAQ

Is Lewiston ME tap water safe to drink in 2026?
Lewiston tap water meets EPA federal drinking water standards and scores 85/100 (Excellent) on PurityMap for 2026. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.
Does Lewiston ME use chlorine or chloramine for disinfection?
Lewiston uses chloramine as the primary disinfectant with a residual level of 0.7 ppm. Chloramine is harder to remove than free chlorine and requires a catalytic carbon or reverse osmosis filter. Standard Brita-style pitchers will NOT remove chloramine.
How hard is Lewiston ME water and what is the TDS level?
Lewiston water hardness is 0.6 grains per gallon (soft) with a TDS of 20 ppm (excellent). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Lewiston ME drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Lewiston drinking water.
What is the best water filter for Lewiston?
Based on Lewiston's water profile, we recommend the Clearly Filtered Water Pitcher. Lewiston water scores well overall. A pitcher filter provides extra precaution and improves taste for drinking and cooking.

Nearby Reports

PortlandMaine — 85/100BangorMaine — 85/100South PortlandMaine — 85/100

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Lewiston and Auburn Water Pollution Control Authority CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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