Water Quality in Portsmouth, NH
25 water systems serving 48,963 people
City Overview
Average lead detection across Portsmouth water systems is 10.8 ppb (Moderate). The EPA action level is 15 ppb. 3 systems have triggered action level violations.
Violation Summary
| Total violations on record | 1279 |
| Health-based violations | 395 |
| Lead action level violations | 3 |
| Open (unresolved) violations | 0 |
Water Systems in Portsmouth
Frequently Asked Questions
Is Portsmouth tap water safe to drink?
Portsmouth tap water meets EPA standards for most contaminants. Review the individual water system pages below for the latest lead sample results and violation history.
What is the water quality in Portsmouth, New Hampshire?
Portsmouth has 25 public water systems serving approximately 48,963 people. The average lead level across sampled systems is 10.8 ppb. There are 1279 total violations on record.
Does Portsmouth have lead in the water?
EPA monitoring data shows an average lead detection of 10.8 ppb across Portsmouth's water systems. The EPA action level is 15 ppb. 3 systems have triggered lead action level violations.
How many water utilities serve Portsmouth?
25 public water systems are registered in Portsmouth, New Hampshire with the EPA Safe Drinking Water Information System. Together they serve approximately 48,963 people.