New Castle, NH · PWSID NH1661010
New Castle Water Works lead service lines
5 lead or galvanized lines to replace
New Castle Water Works reported 0 lead and 5 galvanized-requiring-replacement service lines out of 110 in its inventory. That's about 1 in 22 lines. Another 105 (95%) are still listed as unknown material.
Ranks #33 of 58 New Hampshire systems with confirmed lead lines, and #5,411 nationally.
4.5% of New Castle Water Works's service lines are lead or galvanized requiring replacement. That's higher than the New Hampshire average (1.9%) and higher than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 4.5%
- Unknown 95%
- Non-lead 0%
Total service lines reported: 110. Reported some but not all service line types. Population served: 910; 365 connections.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 5 in 2025 Q1 to 5 in 2026 Q3: no change. Lines of unknown material went from 105 to 105, no change.
Quarterly counts reported to EPA. A drop usually means lines were replaced or confirmed non-lead; a rise usually means more lines were identified. Replacement progress rankings.
Lead rule violations
EPA's data lists 2 Lead and Copper Rule violations since 2015 for New Castle Water Works. Health-based violations are treatment failures, such as corrosion control or public education; the rest are missed monitoring or reporting.
| Began | Violation | Status |
|---|---|---|
| Oct 2023 | Lead consumer notice not delivered or reported | Returned to compliance |
| Jul 2015 | Missed follow-up or routine lead and copper tap sampling | Returned to compliance |
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
New Castle Water Works's main water source is purchased surface water. It buys treated water from Portsmouth Water Works. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while New Castle Water Works is responsible for its own service line inventory and replacement program.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask New Castle Water Works whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Rockingham County
ZIP codes served
ZIP codes whose center falls inside New Castle Water Works's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
03854
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Aquarion Water/Nh | 8 | 9,878 |
| Portsmouth Water Works | 140 | 3,108 |
| Derry Water Dept | 14 | 3,050 |
| Seabrook Water Dept | 0 | 1,198 |
| Exeter Water Dept | 6 | 1,732 |
| Newmarket Water Works | 16 | 0 |
| Rye Water Dist | 1 | 211 |
| Raymond Water Dept | 4 | 1,675 |
Check another water system
Questions
Does New Castle Water Works have lead pipes?
Yes. New Castle Water Works reported 0 lead service lines and 5 galvanized lines that must be replaced, out of 110 total. 105 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on New Castle Water Works's official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will New Castle Water Works replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has New Castle Water Works had lead violations?
EPA's data shows 2 Lead and Copper Rule violations since 2015 for New Castle Water Works.
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "New Castle Water Works lead service lines," https://leadpipemap.com/nh/new-castle-water-works/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.