Haverhill, NH · PWSID NH1101050
Mountain Lakes Water District lead service lines
349 lines still unidentified
Mountain Lakes Water District reported no confirmed lead service lines, but 349 of 349 lines (100%) are still listed as "lead status unknown." Until a line is identified, treat it as possibly lead.
0% of Mountain Lakes Water District'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: 349. Reported some but not all service line types. Population served: 787; 358 connections.
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 349 to 349, 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, 1 health-based for Mountain Lakes Water District. Health-based violations are treatment failures, such as corrosion control or public education; the rest are missed monitoring or reporting.
| Began | Violation | Status |
|---|---|---|
| Aug 2015 | Corrosion control study or recommendation not done health-based | Returned to compliance |
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Mountain Lakes Water District's main water source is groundwater (wells). It buys treated water from Woodsville Water and Light. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Mountain Lakes Water District 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 Mountain Lakes Water District 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 Grafton County
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Lebanon Water Dept | 109 | 1,183 |
| Hanover Water Dept | 4 | 73 |
| Plymouth VLG Water and Sewer | 9 | 362 |
| Littleton Water and Light | 34 | 239 |
| Bristol Water Works | 12 | 1,177 |
| Woodsville Water and Light | 2 | 135 |
| Ashland Water Dept | 3 | 279 |
| Franconia Village Water | 13 | 119 |
Check another water system
Questions
Does Mountain Lakes Water District have lead pipes?
It hasn't confirmed any, but 349 of its 349 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 Mountain Lakes Water District'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 Mountain Lakes Water District 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 Mountain Lakes Water District had lead violations?
EPA's data shows 1 Lead and Copper Rule violation since 2015, 1 health-based for Mountain Lakes Water District.
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, "Mountain Lakes Water District lead service lines," https://leadpipemap.com/nh/mountain-lakes-water-district/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.