Boston
Is Boston tap water safe to drink?
Mostly yes — Boston scores 93/100. This report aggregates EPA drinking water data across 1 local system in Boston. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 02:30 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Boston.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Boston?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Boston tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Boston tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Boston, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (93/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Nitrate levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Boston
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Boston.
Frequently Asked Questions
Is Boston tap water safe to drink?
Mostly yes — Boston scores 93/100.
How many water systems serve Boston?
Boston is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Boston?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Boston.
What is the water quality score for Boston?
The water quality score for Boston is 93 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in Boston?
The top contaminants detected in Boston include Nitrate, Radium-226, Total Trihalomethanes. View detailed information on our contaminants page.
Boston Water Quality Summary
Boston, MA receives a water quality score of 93/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Boston'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.
Boston's score of 93 is 20 points above the Massachusetts state average of 73, and above the nationwide average of roughly 78/100 across all U.S. states.
For residents and home seekers in Boston, Massachusetts, the water profile reflects the unique context of a large coastal city built on dense, older Northeast urban infrastructure. Fortunately, despite the age of these regional networks, tap water here consistently achieves outstanding quality marks under its single water system. This high level of performance offers peace of mind to local households, proving that older urban infrastructure can still deliver highly clean and reliable drinking water.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Massachusetts water quality rankings report →
Key Contaminants
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Water Systems Serving Boston (1)
Check Your Specific Address
Water quality can vary by neighborhood in Boston.
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Compare Boston water quality: View all states · Contaminant library · How we score water quality