WaterQ
New Hampshire State Report All States
Official Status: March 2026

Is Nashua tap water safe to drink?

✓ Generally Safe
A

Mostly yes — Nashua scores 97/100.

Safety Score
97
out of 100

Still not sure if you need a filter in Nashua?

Read Decision Guide →

Nashua

New Hampshire

View New Hampshire state report Verified: Apr 2026

Is Nashua tap water safe to drink?

Mostly yes — Nashua scores 97/100. This report aggregates EPA drinking water data across 1 local system in Nashua. We found 4 total violations (3 unresolved).

Real-Time Environment

Live: 02:45 PM
0mm Precipitation

☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Nashua.

Water Quality Impact

✅ Minimal Impact Localized weather conditions may influence test result variability.

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Nashua?

Requirement Status
Optional
🟢
💡

Expert Advice

Your water quality is excellent. Standard filtration is optional but can further enhance taste.

Buying a Filter?

Should you buy a water purifier in Nashua? See our analysis.

Baby Formula Safety

Is Nashua tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Nashua, water quality is a key factor in long-term property maintenance. The high safety score (97/100) suggests lower risk for plumbing corrosion and appliance scaling.

Property Impact: Positive / Stable

Health & Family Safety

Residents should monitor PFOS (Perfluorooctane Sulfonate) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.

View Health Risk Glossary →

Score Breakdown for Nashua

EPA Compliance & Violations 85/100
Contaminant Safety Margin 97%

*Scores are calculated using weighted EPA monitoring data from the past 5 years.

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 1 public water system 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 N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

What are the top contaminants in Nashua?

The top contaminants detected in Nashua include PFOS (Perfluorooctane Sulfonate), Benzene, Tetrachloroethylene (PCE). View detailed information on our contaminants page.

Water Quality Score
97/100
Grade
A
Water Systems
10
Population
116,336

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.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →

Key Contaminants

PFOS (Perfluorooctane Sulfonate) Violation
0.0051 / 0.004 μg/L
0 μg/L MCL: 0.004 μg/L
Benzene
4.3628 / 5 μg/L
0 μg/L MCL: 5 μg/L
Tetrachloroethylene (PCE)
4.232 / 5 μg/L
0 μg/L MCL: 5 μg/L
Nitrate
8.0147 / 10 mg/L
0 mg/L MCL: 10 mg/L
Mercury
1.2671 / 2 μg/L
0 μg/L MCL: 2 μg/L
Nitrite
0.5399 / 1 mg/L
0 mg/L MCL: 1 mg/L
Lead
6.8184 / 15 μg/L
0 μg/L MCL: 15 μg/L
PFAS (Per- and Polyfluoroalkyl Substances)
0.0018 / 0.004 μg/L
0 μg/L MCL: 0.004 μg/L

Water Systems Serving Nashua (1)

Related

Compare Nashua water quality: View all states · Contaminant library · How we score water quality