Charlestown, NH · PWSID NH0411010
Charlestown Water Works lead service lines
1,304 lines still unidentified
Charlestown Water Works reported no confirmed lead service lines, but 1,304 of 1,304 lines (100%) are still listed as "lead status unknown." Until a line is identified, treat it as possibly lead.
0% of Charlestown Water Works's service lines are lead or galvanized requiring replacement. That's lower than the New Hampshire average (1.9%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 100%
- Non-lead 0%
Total service lines reported: 1,304. Reported some but not all service line types. Population served: 2,850; 1,250 connections.
Lead test results
Charlestown Water Works's most recent 90th-percentile lead result (Jan 2024–Jun 2024) was 19 ppb, above the 15 ppb federal action level. This means 90% of homes sampled were at or below that level; individual homes, especially those with lead lines, can be higher.
Lead and Copper Rule 90th-percentile results reported to EPA, in parts per billion. Dashed lines: 15 ppb action level and the 10 ppb level from November 1, 2027.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 0 in 2025 Q1 to 0 in 2026 Q3: no change. Lines of unknown material went from 1,304 to 1,304, 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 1 Lead and Copper Rule violation since 2015 for Charlestown 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 |
|---|---|---|
| Jan 2017 | 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
Charlestown Water Works's main water source is groundwater (wells).
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 Charlestown 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 Sullivan County
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Claremont Water Dept | 225 | 1,348 |
| Newport Water Works | 25 | 1,494 |
| Village Dist of Eastman | 0 | 1,329 |
| Sunapee Water Works | 0 | 448 |
| Meriden Village Water Dist | 4 | 74 |
| Georges Mills Water Works | 0 | 159 |
| Plainfield Water Dept | 0 | 118 |
| Cary and Allen St Dev | 0 | 17 |
Check another water system
Questions
Does Charlestown Water Works have lead pipes?
It hasn't confirmed any, but 1,304 of its 1,304 service lines are still of unknown material, so lead has not been ruled out.
How do I check if my home's service line is lead?
Look up your address on Charlestown 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 Charlestown 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 Charlestown Water Works had lead violations?
EPA's data shows 1 Lead and Copper Rule violation since 2015 for Charlestown 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, "Charlestown Water Works lead service lines," https://leadpipemap.com/nh/charlestown-water-works/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.