New Hampshire · population 22,938
Lead pipes in Portsmouth, NH
140 lead or galvanized lines to replace
Most of Portsmouth (population 22,938) gets its water from Portsmouth Water Works. That system reported 0 lead and 140 galvanized-requiring-replacement service lines out of 3,248, with 3,108 more of unknown material.
4.3% of Portsmouth Water Works's service lines are lead or galvanized requiring replacement, higher than the New Hampshire average (1.9%) and higher than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 4.3%
- Unknown 96%
- Non-lead 0%
Latest lead test for Portsmouth Water Works (2024): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Portsmouth Water Works.
Water systems serving Portsmouth
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Portsmouth Water WorksMain system | 0 | 140 | 3,108 | 4.3% |
| Pease Trade PortAlso serves parts of the city | 0 | 0 | 113 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Portsmouth
The counts above cover the whole water system. To see whether your line is lead, look up your address on Portsmouth Water Works's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Dover7,939 unknown
- Somersworth191 lead + galv. lines
- Rochesterno lead reported
- Manchester17,297 unknown
- Nashua870 lead + galv. lines
- Laconia53 lead + galv. lines
- Franklin1,577 unknown
- Lebanon109 lead + galv. lines
Check another water system
Questions
Does Portsmouth, NH have lead pipes?
Yes. Portsmouth Water Works, which serves Portsmouth, reported 0 lead and 140 galvanized-requiring-replacement service lines, plus 3,108 of unknown material.
Who supplies water to Portsmouth?
EPA's service area maps place most of Portsmouth in Portsmouth Water Works's service area (PWSID NH1951010). Pease Trade Port also serves parts of the city or nearby areas.
How do I check whether my Portsmouth home has a lead service line?
Search your address on Portsmouth Water Works's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Portsmouth be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Portsmouth Water Works whether your street is scheduled and whether it covers the private side.