PlainWater
Counties → New Hampshire

Belknap County, New Hampshire

Water Systems
255
Population Served
74,926
Total Violations
16,111
2,807 health-based
PFAS Detected
0
of 1 tested

Violation Analysis

89.8%
Systems with Violations
63.2
Avg Violations per System
17.4%
Health-Based Violations

Water Source Types

GW
46 systems (18%)
SW
4 systems (2%)

PFAS Contamination

1
Systems Tested
0
PFAS Detected
0.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Belknap New Hampshire water systems by violation status, EPA SDWIS records.

No violations on record (7) One or more violations (43)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Laconia Water Works 21,000 0 Clean
Meredith Water Dept 3,750 250 -
Locke Lake 2,278 253 -
Alton Water Works 1,800 421 -
Belmont Water Dept 1,612 21 -
Gunstock Acres Village Dist 1,440 140 -
Sanbornton Rest Area 1,200 0 -
Sawyers Dairy Bar 999 23 -
Gilford Middle and High Sch 958 102 -
Meadowbrook/Conference Center 742 41 -
Saint Charles Church 730 28 -
Tilt N Diner 729 47 -
Gilford Hills 700 115 -
Adventure Bound Camping Resort 665 36 -
Barnstead Elementary Sch 646 54 -
West Alton Marina 618 0 -
St Katharine Drexel Parish 600 0 -
New Hampton Village Pct 600 364 -
Dunkin Donuts 600 19 -
Meadowbrook Farm/Stage 592 16 -
Inter Lakes Elementary Sch 587 47 -
Mountain View Yacht Club I 570 55 -
Inter Lakes High Sch 556 11 -
Twin Tamarack Campground 2 N 550 8 -
Prospect Mountain High Sch 500 17 -
Tilton Irving Mainway 500 0 -
Gilmanton Elementary Sch 494 61 -
Rossis Italian Restaurant 480 0 -
Camp Brookwoods 425 41 -
Camp Brookwoods/Deer Run 425 0 -
Pine Gardens MHP 413 3 -
Lochmere Village Dist 405 480 -
Camp Fatima/Dining Hall 400 4 -
The Mug 400 13 -
Haffners 400 14 -
Hidden Valley/Dining Hall 400 22 -
Tanger Outlet Center 400 7 -
Burger King 400 30 -
Abenaki Water /Lakeland 395 62 -
Hunters Run RV Park Lakeside S 388 16 -
Gilford Elementary Sch 376 88 -
Country Cook N at the Lakeside 360 44 -
104 Diner 350 188 -
Winnisquam Beach Campground 348 17 -
Samoset at Winnipesaukee 343 37 -
Resort on the Bay 328 4 -
Mallards Landing 325 19 -
Econo Lodge/Winni Grille 312 24 -
Tamarack Restaurant 300 80 -
Lakes Region MHP Coop II 276 45 -

Other Counties in New Hampshire

Hillsborough County
280 systems · 336,342 served · 17,880 violations
Rockingham County
559 systems · 273,232 served · 32,389 violations
Merrimack County
247 systems · 124,101 served · 14,635 violations
Strafford County
132 systems · 107,387 served · 8,921 violations
Grafton County
269 systems · 101,638 served · 20,540 violations
Carroll County
363 systems · 80,560 served · 21,120 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Belknap County? ▼
Belknap County has 16,111 total drinking water violations across 255 water systems, of which 2,807 are health-based violations. 89.8% of systems have at least one violation.
How many people get water from Belknap County systems? ▼
Water systems in Belknap County serve approximately 74,926 people through 255 public water systems.
Has PFAS been detected in Belknap County water? ▼
Of 1 water systems tested for PFAS in Belknap County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Belknap County? ▼
Water systems in Belknap County use GW (46 systems), SW (4 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 17.4% of Belknap County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.