Lancaster County, Pennsylvania — public water systems

406 active public water systems serve Lancaster County, reporting 405.2K people served.

Dataset updated July 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

406

Population served

405.2K

Community systems

Groundwater share

96.3%

Water systems in Lancaster County

Active public water systems in Lancaster County, Pennsylvania
#	Water system	County	Population served	Type	Source
1	City of Lancaster	Lancaster	120,000	Community	Surface water
2	Columbia Water Co	Lancaster	25,200	Community	Surface water
3	Ephrata Area Joint Authority	Lancaster	24,500	Community	Surface water
4	East Hempfield Water Auth	Lancaster	20,988	Community	Purchased surface water
5	Elizabethtown Area Water	Lancaster	19,000	Community	Surface water
6	Mt Joy Boro Auth	Lancaster	15,261	Community	Groundwater under influence of surface water
7	Lititz Boro	Lancaster	9,397	Community	Groundwater under influence of surface water
8	Warwick Twp Lititz Sys	Lancaster	8,561	Community	Purchased groundwater under influence
9	New Holland Borough	Lancaster	8,490	Community	Groundwater
10	Millersville Univ	Lancaster	7,950	Community	Groundwater
11	Upper Leacock Township	Lancaster	7,734	Community	Purchased surface water
12	East Cocalico Township	Lancaster	6,735	Community	Groundwater under influence of surface water
13	Manheim Area Water & Sewer Aut	Lancaster	6,701	Community	Groundwater under influence of surface water
14	East Petersburg Borough	Lancaster	6,215	Community	Purchased surface water
15	West Earl Water Authority	Lancaster	4,327	Community	Purchased surface water
16	Akron Borough	Lancaster	4,200	Community	Groundwater
17	East Donegal	Lancaster	4,048	Community	Groundwater
18	Denver Boro	Lancaster	3,861	Community	Surface water
19	Masonic Homes	Lancaster	3,707	Community	Groundwater
20	Quarryville Boro	Lancaster	3,150	Community	Purchased surface water
21	Strasburg Muni Water Auth	Lancaster	3,100	Community	Groundwater
22	Northwestern Lancaster Co Auth	Lancaster	2,968	Community	Purchased surface water
23	Warwick Twp Rothsville System	Lancaster	2,846	Community	Groundwater
24	Mt Hope Est & Winery	Lancaster	2,500	Non-transient non-community	Groundwater
25	West Cocalico Twp Water Auth	Lancaster	2,430	Community	Groundwater
26	Shady Maple	Lancaster	2,100	Non-transient non-community	Groundwater
27	Wawa #8025 Gap	Lancaster	2,000	Transient non-community	Groundwater
28	Weaverland Valley Blue Ball	Lancaster	1,946	Community	Groundwater
29	Conestoga Valley Senior High	Lancaster	1,900	Non-transient non-community	Groundwater
30	Adamstown Borough	Lancaster	1,800	Community	Groundwater
31	Wawa Store 158	Lancaster	1,750	Transient non-community	Groundwater
32	Leacock Twp Mun Auth	Lancaster	1,640	Community	Groundwater
33	Conewago Ind Park	Lancaster	1,600	Non-transient non-community	Groundwater
34	Solanco High Sch	Lancaster	1,460	Non-transient non-community	Groundwater
35	Manheim Auto Auction	Lancaster	1,426	Non-transient non-community	Groundwater
36	Terre Hill Borough	Lancaster	1,295	Community	Groundwater
37	Lancaster County Bible Church	Lancaster	1,254	Transient non-community	Groundwater
38	Swift Middle Sch	Lancaster	1,200	Non-transient non-community	Groundwater
39	Bainbridge Water Authority	Lancaster	1,200	Community	Groundwater
40	Tyson Foods	Lancaster	1,144	Non-transient non-community	Groundwater
41	Christiana Muni Water Auth	Lancaster	1,100	Community	Groundwater
42	Urban Outfitters	Lancaster	1,001	Non-transient non-community	Groundwater
43	Spring Gulch Resort Cpgrd	Lancaster	900	Transient non-community	Groundwater
44	Goods Store	Lancaster	900	Non-transient non-community	Groundwater
45	Landis Homes	Lancaster	850	Community	Purchased surface water
46	New Holland Shopping Center	Lancaster	825	Non-transient non-community	Groundwater
47	Cocalico Creek Cpgrd	Lancaster	800	Transient non-community	Groundwater
48	Windmill Family Restaurant	Lancaster	800	Transient non-community	Groundwater
49	Junction Center	Lancaster	775	Transient non-community	Groundwater
50	Quarryville Presby Ret Comm	Lancaster	750	Community	Groundwater