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Grafton County, New Hampshire — public water systems

At a glance

270 active public water systems are filed under Grafton County, New Hampshire in EPA's SDWIS records, together reporting 106,236 people served. The largest is Lebanon Water Dept, which reports serving 13,600 people. 74 are community water systems serving people where they live; the other 196 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

270

Population served

106.2K

Community systems

74

Groundwater share

97.4%

How does Grafton County compare with other New Hampshire counties?

Grafton County has the 4th-most active public water systems among the 15 counties listed for active New Hampshire systems in EPA records; among the 10 with 3 or more systems, the median has 250. Its systems report 106,236 people served in total, the 5th-largest county figure in the state and 8.5% of the statewide total. The average system here reports serving 394 people, about 23% below the New Hampshire average of 508. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Grafton County's drinking water come from?

By primary water source, Grafton County's active systems draw on groundwater (263, 97%) and surface water (7, 2.6%). Overall, 97% rely mainly on groundwater (including purchased groundwater) and 2.6% on surface water, compared with 97% and 2.7% across New Hampshire. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Lebanon Water Dept, draws primarily on surface water.

What kinds of water systems operate in Grafton County?

Grafton County's active systems break down as 74 community systems (27%), 30 non-transient non-community systems (11%) and 166 transient non-community systems (61%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (79%), local government (14%), federal government (4.1%) and state government (3.3%).

The 50 largest water systems in Grafton County

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Active public water systems in Grafton County, New Hampshire
#Water systemCountyPopulation servedTypeSource
1Lebanon Water DeptGrafton13,600CommunitySurface water
2Hanover Water DeptGrafton9,600CommunitySurface water
3Plymouth Vlg Water and SewerGrafton6,700CommunityGroundwater
4Littleton Water and LightGrafton6,500CommunitySurface water
5Bristol Water WorksGrafton3,575CommunityGroundwater
6Lincoln Water WorksGrafton3,300CommunitySurface water
7Waterville Valley Water DistGrafton3,150CommunityGroundwater
8Woodstock Water DeptGrafton2,950CommunityGroundwater
9Woodsville Water and LightGrafton1,950CommunitySurface water
10Bethlehem Village DistGrafton1,750CommunitySurface water
11Ashland Water DeptGrafton1,525CommunityGroundwater
12W Valley Ski Area Base LodgeGrafton1,500Transient non-communityGroundwater
13Enfield Water DeptGrafton1,345CommunityGroundwater
14Waterville Estate Vlg Dist/WGrafton1,250CommunityGroundwater
15Lisbon Water DeptGrafton1,010CommunityGroundwater
16Fnsp Cannon Mtn Peabody SlopeGrafton1,000Transient non-communityGroundwater
17Fnsp the FlumeGrafton1,000Transient non-communityGroundwater
18Fnsp Tram Summit StationGrafton1,000Transient non-communityGroundwater
19Loon Mountain Camp IiiGrafton999Transient non-communityGroundwater
20Loon Mountain Summit CafeGrafton999Transient non-communityGroundwater
21Fnsp Tram Valley StationGrafton900Transient non-communityGroundwater
22Indian River SchGrafton820Non-transient non-communityGroundwater
23Dartmouth SkiwayGrafton800Transient non-communityGroundwater
24Littleton Rest AreaGrafton800Transient non-communityGroundwater
25Mountain Lakes Water DistrictGrafton787CommunityGroundwater
26No Haverhill Water and LightGrafton750CommunityGroundwater
27Dunkin DonutsGrafton700Transient non-communityGroundwater
28Canaan Water DeptGrafton684CommunitySurface water
29Camp Walt WhitmanGrafton650Transient non-communityGroundwater
30Campton Village PctGrafton600CommunityGroundwater
31Polar CavesGrafton600Transient non-communityGroundwater
32Precinct of Haverhill CornerGrafton540CommunityGroundwater
33Franconia Village WaterGrafton535CommunityGroundwater
34Rockywold CampGrafton530Transient non-communityGroundwater
35Deephaven CampGrafton530Transient non-communityGroundwater
36Moose Hillock CampgroundGrafton505Transient non-communityGroundwater
37Whaleback MountainGrafton500Transient non-communityGroundwater
38Camp Berea/Dining HallGrafton500Transient non-communityGroundwater
39Newfound Regional HsGrafton500Non-transient non-communityGroundwater
40Camp WicosutaGrafton475Transient non-communityGroundwater
41Mittersill Water DeptGrafton475CommunityGroundwater
42Walters BasinGrafton450Transient non-communityGroundwater
43Goose Hollow Travel Trailer PkGrafton438Transient non-communityGroundwater
44Covered Bridge Farm TableGrafton410Transient non-communityGroundwater
45W Valley Ski Area SchwendiGrafton400Transient non-communityGroundwater
46Russell Pond CampgroundGrafton400Transient non-communityGroundwater
47Fnsp Lafayette Place CpgdGrafton385Transient non-communityGroundwater
48Davidsons Countryside CpgdGrafton365Transient non-communityGroundwater
49Rosebrook LodgeGrafton350Transient non-communityGroundwater
50Broken Branch Koa CampgroundGrafton335Transient non-communityGroundwater

All other water systems in Grafton County (220)

The remaining active systems filed under Grafton County, largest first, with the population each reports serving.

Grafton County water systems: frequently asked questions

How many public water systems are in Grafton County, New Hampshire?

EPA's SDWIS records file 270 active public water systems under Grafton County, New Hampshire: 74 community systems (27%), 30 non-transient non-community systems (11%) and 166 transient non-community systems (61%).

Who supplies drinking water in Grafton County, NH?

The largest community water systems filed under Grafton County are Lebanon Water Dept (13,600 people served), Hanover Water Dept (9,600 people served) and Plymouth Vlg Water and Sewer (6,700 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Grafton County's drinking water come from groundwater or surface water?

Of the 270 active public water systems in Grafton County, 97% draw mainly on groundwater and 2.6% on surface water, counting purchased supplies. The largest system, Lebanon Water Dept, uses surface water.

Where can I find a water quality report for Grafton County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 74 community systems are filed under Grafton County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Grafton County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More New Hampshire water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Grafton County, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/grafton (data as of October 1, 2026).