Southwest Harbor
Is Southwest Harbor tap water safe to drink?
Mostly yes — Southwest Harbor scores 84/100. This report aggregates EPA drinking water data across 0 local systems in Southwest Harbor. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 04:45 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Southwest Harbor.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Southwest Harbor?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Filter or no filter for Southwest Harbor water? Here's what the data says.
Baby Formula Safety
What new parents in Southwest Harbor should know about tap water safety.
Homebuyer's Perspective
Water quality is easy to overlook when evaluating a move to Southwest Harbor, but it can affect plumbing longevity and appliance lifespan. The high safety score (84/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Current records show no major contaminant spikes, making Southwest Harbor a preferred choice for health-conscious families.
View Health Risk Glossary →Compliance Record for Southwest Harbor
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Southwest Harbor.
Frequently Asked Questions
Is Southwest Harbor tap water safe to drink?
Mostly yes — Southwest Harbor scores 84/100.
How many water systems serve Southwest Harbor?
Southwest Harbor is served by 0 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Southwest Harbor?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Southwest Harbor.
What is the water quality score for Southwest Harbor?
The water quality score for Southwest Harbor is 84 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in Southwest Harbor?
Current contaminant data for Southwest Harbor is being updated. Check back soon or search your specific address for the latest results.
Southwest Harbor Water Quality Summary
Southwest Harbor, ME receives a water quality score of 84/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Southwest Harbor'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.
Southwest Harbor's score of 84 is 3 points below the Maine state average of 87, and above the nationwide average of roughly 78/100 across all U.S. states.
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 →
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Water Systems Serving Southwest Harbor (0)
Water system data coming soon for Southwest Harbor.
Check Your Specific Address
Water quality can vary by neighborhood in Southwest Harbor.
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Compare Southwest Harbor water quality: View all states · Contaminant library · How we score water quality