Madison, New Hampshire Water Quality Report
Water quality data for 1 water system serving 1,200 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 13.9 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 139% | Above guideline |
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Compliance & Violations
Resolved Violations (45)
75
May 12, 2025
75
May 12, 2025
75
Jan 6, 2025
75
Jan 6, 2025
02
Jan 1, 2025 — Mar 31, 2025
+ 40 more resolved violations
Frequently Asked Questions
Is Madison tap water safe to drink?
Madison's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Madison tap water?
1 contaminants have been detected in Madison's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Madison?
Install a water filter rated for the specific contaminants found in Madison's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.