PlainWater
Counties → New Hampshire

Grafton County, New Hampshire

Water Systems
269
Population Served
101,638
Total Violations
20,540
3,976 health-based
PFAS Detected
1
of 5 tested

Violation Analysis

94.4%
Systems with Violations
76.4
Avg Violations per System
19.4%
Health-Based Violations

Water Source Types

GW
43 systems (16%)
SW
7 systems (3%)

PFAS Contamination

5
Systems Tested
1
PFAS Detected
20.0%
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

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

No violations on record (2) One or more violations (48)

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
Lebanon Water Dept 10,050 10 Clean
Hanover Water Dept 8,500 166 Clean
Plymouth Vlg Water and Sewer 6,700 82 Clean
Littleton Water and Light 6,500 183 Clean
Bristol Water Works 3,575 20 Clean
Lincoln Water Works 3,300 63 -
Waterville Valley Water Dist 3,150 44 -
Woodstock Water Dept 2,950 28 -
Woodsville Water and Light 2,075 79 -
Bethlehem Village Dist 1,750 299 -
Ashland Water Dept 1,525 188 -
W Valley Ski Area Base Lodge 1,500 8 -
Enfield Water Dept 1,345 55 -
Waterville Estate Vlg Dist/W 1,250 139 -
Lisbon Water Dept 1,010 252 -
Fnsp Tram Summit Station 1,000 41 -
Fnsp Cannon Mtn Peabody Slope 1,000 72 -
Fnsp the Flume 1,000 41 -
Loon Mountain Camp III 999 16 -
Loon Mountain Summit Cafe 999 0 -
Fnsp Tram Valley Station 900 36 -
Littleton Rest Area 800 19 -
Dartmouth Skiway 800 50 -
Indian River Sch 799 41 -
Mountain Lakes Water District 787 271 -
No Haverhill Water and Light 750 288 -
Dunkin Donuts 700 0 -
Canaan Water Dept 684 261 -
Camp Walt Whitman 650 27 -
Campton Village Pct 600 469 -
Polar Caves 600 8 -
Precinct of Haverhill Corner 540 53 -
Franconia Village Water 535 76 -
Rockywold Camp 530 5 -
Deephaven Camp 530 5 -
Moose Hillock Campground 505 92 -
Newfound Regional Hs 500 2 -
Whaleback Mountain 500 121 -
Camp Berea/Dining Hall 500 6 -
Mittersill Water Dept 475 157 -
Camp Wicosuta 475 40 -
Walters Basin 450 44 -
Goose Hollow Travel Trailer Pk 438 41 -
Covered Bridge Farm Table 410 80 -
W Valley Ski Area Schwendi 400 14 -
Russell Pond Campground 400 12 -
Fnsp Lafayette Place Cpgd 385 43 -
Davidsons Countryside Cpgd 365 24 -
Rosebrook Lodge 350 4 -
Broken Branch KOA Campground 335 68 -

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
Carroll County
363 systems · 80,560 served · 21,120 violations
Belknap County
255 systems · 74,926 served · 16,111 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Grafton County? ▼
Grafton County has 20,540 total drinking water violations across 269 water systems, of which 3,976 are health-based violations. 94.4% of systems have at least one violation.
How many people get water from Grafton County systems? ▼
Water systems in Grafton County serve approximately 101,638 people through 269 public water systems.
Has PFAS been detected in Grafton County water? ▼
Of 5 water systems tested for PFAS in Grafton County, 1 had PFAS detected (20.0% detection rate).
What types of water sources supply Grafton County? ▼
Water systems in Grafton County use GW (43 systems), SW (7 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. 19.4% of Grafton 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.