Portland
Is Portland tap water safe to drink?
Mostly yes — Portland scores 92/100. This report aggregates EPA drinking water data across 1 local system in Portland. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 02:45 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Portland.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Portland?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Portland tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Portland tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Portland, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (92/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Portland
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Portland.
Frequently Asked Questions
Is Portland tap water safe to drink?
Mostly yes — Portland scores 92/100.
How many water systems serve Portland?
Portland is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Portland?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Portland.
What is the water quality score for Portland?
The water quality score for Portland is 92 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in Portland?
The top contaminants detected in Portland include Lead, Gross Alpha Particle Activity, Radium-228. View detailed information on our contaminants page.
Portland Water Quality Summary
Portland, ME receives a water quality score of 92/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Portland'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.
Portland's score of 92 is 5 points above the Maine state average of 87, and above the nationwide average of roughly 78/100 across all U.S. states.
For residents and prospective homebuyers looking at Portland, Maine, the city's single water system provides tap water that achieves an exemplary standard of quality. Maintaining these high standards in the coastal New England region is notable, especially when navigating the challenges of older, small-town infrastructure set against a rural and forested landscape. Despite these regional conditions, this mid-size city successfully delivers clean, reliable water to its community.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Maine water quality rankings report →
Key Contaminants
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Water Systems Serving Portland (1)
Check Your Specific Address
Water quality can vary by neighborhood in Portland.
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