MyCleanWater

Thornton, New Hampshire Water Quality Report

Water quality data for 1 water system serving 53 people.

100
Excellent
out of 100

Water Source

1
Water System
53
People Served
Ground water
Water Source

Detected Contaminants

No contaminant data available for this location.

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Compliance & Violations

Resolved Violations (452)

01

Apr 1, 2025 — Jun 30, 2025

critical

01

Apr 1, 2025 — Jun 30, 2025

critical

01

Apr 1, 2025 — Jun 30, 2025

critical

01

Apr 1, 2025 — Jun 30, 2025

critical

01

Jan 1, 2025 — Mar 31, 2025

critical

+ 447 more resolved violations

Frequently Asked Questions

Is Thornton tap water safe to drink?

Thornton's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.

What contaminants are in Thornton tap water?

0 contaminants have been detected in Thornton's water supply across 1 water system. See the full contaminant table above for details.

How can I improve my water quality in Thornton?

Install a water filter rated for the specific contaminants found in Thornton's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.