County · New Hampshire
Belknap County, New Hampshire: drinking water records
This overview covers 13 ZIP codes and 65 community water systems in Belknap County. It also stands in for 4 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Laconia Water Works NH1281010 | 17,125 | 120 | 0 | 0 | 4 ppb |
| Meredith Water Dept NH1521010 | 3,750 | 0 | 0 | 3 | 6 ppb |
| Alton Water Works NH0061010 | 1,800 | 0 | 0 | 2 | 210 ppb |
| Gunstock Acres Village Dist NH0881020 | 1,440 | 0 | 0 | 1 | 34 ppb |
| New Hampton Village Pct NH1691010 | 600 | 0 | 0 | 49 | 23 ppb |
| Pendleton Cove NH1282030 | 204 | 0 | 0 | 1 | 36 ppb |
| Wentworth Cove Estates NH1282020 | 140 | 0 | 0 | 1 | 16 ppb |
| Brookside Crossing NH0882180 | 138 | 0 | 0 | 1 | 21 ppb |
| Mountain View Apts NH1282010 | 100 | 0 | 0 | 2 | 72 ppb |
| Locke Lake NH0142010 | 2,308 | 0 | 0 | 2 | not reported |
| Belmont Water Dept NH0201010 | 1,612 | 0 | 0 | 0 | 85 ppb |
| Pine Gardens MHP NH0203040 | 413 | 0 | 0 | 0 | 20 ppb |
| Merrymeeting MHP NH0063020 | 265 | 0 | 0 | 0 | 22 ppb |
| Belmont Water Dept/North NH0201020 | 150 | 0 | 0 | 0 | 16 ppb |
| Lake Shore Park NH0882150 | 150 | 0 | 0 | 0 | 26 ppb |
| Forestview Manor NH1524010 | 131 | 0 | 0 | 0 | 23 ppb |
| Gilford Forest Estates NH0882020 | 113 | 0 | 0 | 0 | 23 ppb |
| Country Village Way NH0882170 | 100 | 0 | 0 | 0 | 248 ppb |
| Marina Bay Condos I and II NH0882140 | 100 | 0 | 0 | 0 | 16 ppb |
| Brake Hill Acres NH0882050 | 98 | 0 | 0 | 5 | not reported |
| Breton Woods Dev NH0882220 | 90 | 0 | 0 | 1 | not reported |
| Pine Hill Community Assn NH1522070 | 85 | 0 | 0 | 1 | not reported |
| Gilford Meadows NH0882210 | 75 | 0 | 0 | 0 | 131 ppb |
| Mansfield Woods NH1692030 | 66 | 0 | 0 | 4 | not reported |
| Westview Meadows NH0202040 | 58 | 0 | 0 | 0 | 38 ppb |
ZIP reports in Belknap County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 03218, 03226, 03237, 03837.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.