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Adams County, Pennsylvania — public water systems

At a glance

147 active public water systems are filed under Adams County, Pennsylvania in EPA's SDWIS records, together reporting 78,847 people served. The largest is Gettysburg Muni Auth, which reports serving 12,425 people. 30 are community water systems serving people where they live; the other 117 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

147

Population served

78.8K

Community systems

30

Groundwater share

98.6%

How does Adams County compare with other Pennsylvania counties?

Adams County has the 16th-most active public water systems among the 99 counties listed for active Pennsylvania systems in EPA records; among the 71 with 3 or more systems, the median has 76. Its systems report 78,847 people served in total, the 32nd-largest county figure in the state and 0.6% of the statewide total. The average system here reports serving 536 people, well below the Pennsylvania average of 1,741. 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 Adams County's drinking water come from?

By primary water source, Adams County's active systems draw on groundwater (145, 99%) and surface water (2, 1.4%). Overall, 99% rely mainly on groundwater (including purchased groundwater) and 1.4% on surface water, compared with 93% and 6.8% across Pennsylvania. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Gettysburg Muni Auth, draws primarily on surface water.

What kinds of water systems operate in Adams County?

Adams County's active systems break down as 30 community systems (20%), 26 non-transient non-community systems (18%) and 91 transient non-community systems (62%). 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 (65%), public/private partnership (26%) and local government (9.5%).

The 50 largest water systems in Adams County

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Active public water systems in Adams County, Pennsylvania
#Water systemCountyPopulation servedTypeSource
1Gettysburg Muni AuthAdams12,425CommunitySurface water
2Littlestown BoroAdams7,300CommunityGroundwater
3Outlet Shops at GettysburgAdams6,500Non-transient non-communityGroundwater
4New Oxford Munci AuthAdams3,963CommunitySurface water
5Lake Meade Muni AuthAdams3,221CommunityGroundwater
6Bonneauville Muni Water AuthAdams2,730CommunityGroundwater
7Biglerville Water CoAdams2,501CommunityGroundwater
8Bermudian Springs Sch DistAdams2,300Non-transient non-communityGroundwater
9Fairfield Muni AuthAdams2,150CommunityGroundwater
10Weis Markets East BerlinAdams1,800Non-transient non-communityGroundwater
11East Berlin Area Joint AuthAdams1,750CommunityGroundwater
12Pa Amer Water Co Lake HeritageAdams1,648CommunityGroundwater
13Arendtsville Muni Water SysAdams1,200CommunityGroundwater
14York Springs Muni WaterAdams1,095CommunityGroundwater
15Bendersville Muni AuthAdams1,039CommunityGroundwater
16Rutters Store 17Adams1,000Transient non-communityGroundwater
17Ski LibertyAdams1,000Non-transient non-communityGroundwater
18Granite Hill CampgroundAdams950Transient non-communityGroundwater
19Rutters Store 36Adams900Transient non-communityGroundwater
20Gettysburg CpgrdAdams800Transient non-communityGroundwater
21Possum Valley Muni AuthAdams800CommunityGroundwater
22Eisenhower Water SupplyAdams760CommunityGroundwater
23Harvest ChapelAdams600Transient non-communityGroundwater
24Gettysburg Sunoco 2709Adams500Transient non-communityGroundwater
25Gettysburg National Golf ClubAdams500Transient non-communityGroundwater
26Freedom Valley Worship CtrAdams500Non-transient non-communityGroundwater
27Gettysburg Battlefield ResortAdams500Transient non-communityGroundwater
28Adams Cnty Fac CtrAdams456CommunityGroundwater
29Bethel Assembly of God LtownAdams450Transient non-communityGroundwater
30AmblebrookAdams450CommunityGroundwater
31Franklin Twp Muni AuthAdams441CommunityGroundwater
32Conewago CpgdAdams400Transient non-communityGroundwater
33Frontier Bar B QAdams400Transient non-communityGroundwater
34Artillery Ridge CpgrdAdams400Transient non-communityGroundwater
35Aqua Pa Links at Gettysburg SyAdams398CommunityGroundwater
36Knouse Foods Inc. Peach GlenAdams340Non-transient non-communityGroundwater
37Dave & JanesAdams325Transient non-communityGroundwater
38Knouse Foods Inc. OrrtannaAdams316Non-transient non-communityGroundwater
39Gettysburg Montessori SchoolAdams308Non-transient non-communityGroundwater
40Gettysburg K O AAdams300Transient non-communityGroundwater
41Camp NawakwaAdams300Transient non-communityGroundwater
42Crabbs Tropical TreatAdams300Transient non-communityGroundwater
43Church of Jesus Christ of LDSAdams300Transient non-communityGroundwater
44Wendys at Cross Keys CenterAdams300Transient non-communityGroundwater
45910 Bj LLCAdams300Transient non-communityGroundwater
46Barlow Fire DeptAdams300Transient non-communityGroundwater
47Anchor EstatesAdams300CommunityGroundwater
48Jen Jens Rhythm N BrewsAdams300Transient non-communityGroundwater
49Gettysburg Hampton InnAdams300Transient non-communityGroundwater
50Western Cumberland Water SysAdams275CommunityGroundwater

All other water systems in Adams County (97)

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

Adams County water systems: frequently asked questions

How many public water systems are in Adams County, Pennsylvania?

EPA's SDWIS records file 147 active public water systems under Adams County, Pennsylvania: 30 community systems (20%), 26 non-transient non-community systems (18%) and 91 transient non-community systems (62%).

Who supplies drinking water in Adams County, PA?

The largest community water systems filed under Adams County are Gettysburg Muni Auth (12,425 people served), Littlestown Boro (7,300 people served) and New Oxford Munci Auth (3,963 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 Adams County's drinking water come from groundwater or surface water?

Of the 147 active public water systems in Adams County, 99% draw mainly on groundwater and 1.4% on surface water, counting purchased supplies. The largest system, Gettysburg Muni Auth, uses surface water.

Where can I find a water quality report for Adams 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. 30 community systems are filed under Adams 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 Adams 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 Pennsylvania 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 Adams County, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/adams (data as of October 1, 2026).