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Franklin County, Pennsylvania — public water systems

At a glance

115 active public water systems are filed under Franklin County, Pennsylvania in EPA's SDWIS records, together reporting 135,909 people served. The largest is Chambersburg Boro Water Sys, which reports serving 31,048 people. 30 are community water systems serving people where they live; the other 85 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

115

Population served

135.9K

Community systems

30

Groundwater share

92.2%

How does Franklin County compare with other Pennsylvania counties?

Franklin County has the 22nd-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 135,909 people served in total, the 24th-largest county figure in the state and 1.1% of the statewide total. The average system here reports serving 1,182 people, about 32% 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 Franklin County's drinking water come from?

By primary water source, Franklin County's active systems draw on groundwater (105, 91%), surface water (7, 6.1%), purchased surface water (2, 1.7%) and groundwater under influence of surface water (1, 0.9%). Overall, 92% rely mainly on groundwater (including purchased groundwater) and 7.8% 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, Chambersburg Boro Water Sys, draws primarily on surface water.

What kinds of water systems operate in Franklin County?

Franklin County's active systems break down as 30 community systems (26%), 19 non-transient non-community systems (17%) and 66 transient non-community systems (57%). 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 (50%), local government (23%), public/private partnership (23%) and state government (2.6%).

The 50 largest water systems in Franklin County

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Active public water systems in Franklin County, Pennsylvania
#Water systemCountyPopulation servedTypeSource
1Chambersburg Boro Water SysFranklin31,048CommunitySurface water
2Guilford Water AuthFranklin28,135CommunityGroundwater
3Boro of WaynesboroFranklin13,200CommunitySurface water
4Bear Valley Joint AuthFranklin12,589CommunitySurface water
5Washington Twp Muni AuthFranklin6,134CommunityGroundwater
6Greencastle Area Water AuthFranklin5,500CommunitySurface water
7Franklin System York WaterFranklin4,400CommunitySurface water
8Caledonia St ParkFranklin2,600Non-transient non-communityGroundwater
9Mercersburg Muni Water AuthFranklin2,350CommunitySurface water
10Grove Worldwide Us LLCFranklin1,800Non-transient non-communityGroundwater
11Mont Alto Municipal AuthorityFranklin1,705CommunityGroundwater
12James Buchanan Middle/High SchFranklin1,450Non-transient non-communityGroundwater
13Pa State Univ Mont Alto CampusFranklin1,300Non-transient non-communityGroundwater
14Antrim Township Municipal AuthFranklin1,149CommunityGroundwater under influence of surface water
15Zullinger Water System WtmaFranklin1,080CommunityPurchased surface water
16Saunderosa ParkFranklin999Transient non-communityGroundwater
17South Mountain Restoration CtrFranklin950CommunitySurface water
18Whitetail Ski ResortFranklin912CommunityGroundwater
19Five Forks Brethren in ChristFranklin900Transient non-communityGroundwater
20Lakeview Motel & RestaurantFranklin800Transient non-communityGroundwater
21Mowrey Elem SchFranklin695Non-transient non-communityGroundwater
22Fannett Metal Sch DistFranklin600Non-transient non-communityGroundwater
23Antrim Bic ChurchFranklin550Transient non-communityGroundwater
24Quincy Twp Water SystemFranklin530CommunityGroundwater
25Rutters Farm Store 78Franklin500Transient non-communityGroundwater
26Edenville Water Assn Inc.Franklin491CommunityGroundwater
27Quincy Mini MartFranklin450Transient non-communityGroundwater
28Quincy Village SystemFranklin450CommunityGroundwater
29Klines GroceryFranklin400Transient non-communityGroundwater
30Solomons Evangelical Luth ChFranklin400Transient non-communityGroundwater
31Ishas Mart 2Franklin400Transient non-communityGroundwater
32Luigis Pizza FactoryFranklin400Transient non-communityGroundwater
33Kauffman Community CenterFranklin350Transient non-communityGroundwater
34Mount Rock ManorFranklin350CommunityGroundwater
35Pauls Country MktFranklin300Transient non-communityGroundwater
36Montgomery Elem SchoolFranklin300Non-transient non-communityGroundwater
37Dry Run Water AssnFranklin278CommunityGroundwater
38Mercersburg Sportsman AssnFranklin275Transient non-communityGroundwater
39Camp TohigloFranklin260Transient non-communityGroundwater
40Mrs Gibble RestaurantFranklin240Transient non-communityGroundwater
41Hollowell Brethren in ChristFranklin230Transient non-communityGroundwater
42Lenwood ParkFranklin230CommunityGroundwater
43Greencastle Ch of GodFranklin220Transient non-communityGroundwater
44Suez Water Kensington SystemFranklin204CommunityPurchased surface water
45South Mountain Bible ChFranklin200Transient non-communityGroundwater
46Rhodes Grove CampFranklin200Transient non-communityGroundwater
47Spring Run Pit StopFranklin200Transient non-communityGroundwater
48South Mountain Fish & GameFranklin200Transient non-communityGroundwater
49Antrim Township ParkFranklin200Transient non-communityGroundwater
50Cedar Grove Mennonite ChurchFranklin200Transient non-communityGroundwater

All other water systems in Franklin County (65)

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

Franklin County water systems: frequently asked questions

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

EPA's SDWIS records file 115 active public water systems under Franklin County, Pennsylvania: 30 community systems (26%), 19 non-transient non-community systems (17%) and 66 transient non-community systems (57%).

Who supplies drinking water in Franklin County, PA?

The largest community water systems filed under Franklin County are Chambersburg Boro Water Sys (31,048 people served), Guilford Water Auth (28,135 people served) and Boro of Waynesboro (13,200 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 Franklin County's drinking water come from groundwater or surface water?

Of the 115 active public water systems in Franklin County, 92% draw mainly on groundwater and 7.8% on surface water, counting purchased supplies. The largest system, Chambersburg Boro Water Sys, uses surface water.

Where can I find a water quality report for Franklin 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 Franklin 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 Franklin 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 Franklin County, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/franklin (data as of October 1, 2026).