Nashua
Is Nashua tap water safe to drink?
Mostly yes — Nashua scores 97/100. This report aggregates EPA drinking water data across 10 local systems in Nashua. We found 739 total violations (48 unresolved).
Real-Time Environment
Live: 04:15 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Nashua.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Nashua?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Nashua tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Nashua tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Nashua, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (97/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Nashua
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Nashua.
Frequently Asked Questions
Is Nashua tap water safe to drink?
Mostly yes — Nashua scores 97/100.
How many water systems serve Nashua?
Nashua is served by 10 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Nashua?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Nashua.
What is the water quality score for Nashua?
The water quality score for Nashua is 97 out of 100, based on EPA contaminant data, violation history, and testing results across the 10 systems serving the city.
What are the top contaminants in Nashua?
The top contaminants detected in Nashua include Lead (90th percentile). View detailed information on our contaminants page.
Nashua Water Quality Summary
Nashua, NH receives a water quality score of 97/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 10 public water systems serving the area.
Nashua'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.
Nashua's score of 97 is 12 points above the New Hampshire state average of 85, and above the nationwide average of roughly 78/100 across all U.S. states.
For anyone moving to this mid-size city in New Hampshire, the local tap water offers great reassurance, consistently achieving an exemplary rating that reflects clean and safe municipal delivery. Unlike many of the small rural systems scattered across New England's forested landscapes and granite bedrock, Nashua's supply is distributed through multiple separate systems that sustain this high level of service. This robust network ensures that households throughout the area receive highly reliable drinking water, making it a strong selling point for prospective homebuyers looking in the region.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our New Hampshire water quality rankings report →
Key Contaminants
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Water Systems Serving Nashua (10)
Londonderry
ALocke Lake
ABelmont Water Dept
APenacook Boscawen Water Pct
ALittle Pond Estates
ALitchfield
APennichuck Water Works
APowder Hill
APittsfield Aqueduct
ADrew Woods
ACheck Your Specific Address
Water quality can vary by neighborhood in Nashua.
Related
Quick compare in New Hampshire
Compare Nashua water quality: View all states · Contaminant library · How we score water quality