Dauphin County, Pennsylvania — public water systems

136 active public water systems serve Dauphin County, reporting 291.7K people served.

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

Active systems

136

Population served

291.7K

Community systems

Groundwater share

94.9%

Water systems in Dauphin County

Active public water systems in Dauphin County, Pennsylvania
#	Water system	County	Population served	Type	Source
1	Veolia Water	Dauphin	110,000	Community	Surface water
2	Capital Region Water	Dauphin	66,540	Community	Surface water
3	Pa Amer Water Co	Dauphin	50,200	Community	Surface water
4	Veolia Middletown	Dauphin	9,600	Community	Groundwater
5	Pa American Water Steelton	Dauphin	6,428	Community	Surface water
6	Penn National Gaming	Dauphin	6,000	Non-transient non-community	Groundwater
7	Millersburg Water Auth	Dauphin	4,600	Community	Surface water
8	Lykens Boro Auth	Dauphin	3,220	Community	Surface water
9	Elizabethville Area Auth	Dauphin	2,700	Community	Groundwater
10	Williamstown Boro Auth	Dauphin	2,390	Community	Surface water
11	Halifax Area Water & Sewer Aut	Dauphin	2,278	Community	Groundwater
12	Rutters Farm Store 77	Dauphin	1,600	Non-transient non-community	Groundwater
13	Harrisburg Intl Airport	Dauphin	1,500	Non-transient non-community	Groundwater
14	Rutters Farm Store #20	Dauphin	1,200	Transient non-community	Groundwater
15	Sheetz 461	Dauphin	1,100	Non-transient non-community	Groundwater
16	Royalton Boro	Dauphin	1,083	Community	Purchased groundwater
17	Pa Dot Site 48 Mod Rest Area	Dauphin	1,000	Transient non-community	Groundwater
18	Pa Dot Site 47 Mod Rest Area	Dauphin	1,000	Transient non-community	Groundwater
19	Sheetz Grantville	Dauphin	900	Transient non-community	Groundwater
20	Thermo Fisher Scientific	Dauphin	800	Non-transient non-community	Groundwater
21	Upper Dauphin Middle Sch	Dauphin	779	Non-transient non-community	Groundwater
22	Gratz Boro Water Revenue Fund	Dauphin	738	Community	Groundwater
23	Mainstay Suites	Dauphin	700	Transient non-community	Groundwater
24	Middletown Anglers & Hunters	Dauphin	600	Transient non-community	Groundwater
25	Funcks Exxon	Dauphin	500	Transient non-community	Groundwater
26	Holiday Inn Grantville	Dauphin	500	Non-transient non-community	Groundwater
27	Londonderry Elem Sch	Dauphin	465	Non-transient non-community	Groundwater
28	Harrisburg Christian Sch	Dauphin	450	Non-transient non-community	Groundwater
29	East Hanover Elem Sch	Dauphin	440	Non-transient non-community	Groundwater
30	Cedar Manor MHP	Dauphin	432	Community	Groundwater
31	Oak Knoll Est MHP	Dauphin	350	Community	Groundwater
32	Pillow Boro Auth	Dauphin	312	Community	Groundwater
33	Pine Manor MHP	Dauphin	302	Community	Groundwater
34	Sunset Gc	Dauphin	300	Transient non-community	Groundwater
35	Lykens Valley Golf Course	Dauphin	300	Transient non-community	Groundwater
36	Red Rabbit Drive in	Dauphin	300	Transient non-community	Groundwater
37	Tmi Plt Drinking Water Sys	Dauphin	300	Non-transient non-community	Groundwater
38	Northern Dauphin Co Ymca	Dauphin	300	Transient non-community	Groundwater
39	Halifax Village	Dauphin	272	Community	Groundwater
40	Devonshire Mem United Breth Ch	Dauphin	260	Transient non-community	Groundwater
41	Conewago Twp Elem Sch	Dauphin	250	Non-transient non-community	Groundwater
42	Hampton Inn	Dauphin	240	Transient non-community	Groundwater
43	Crestview Village MHP	Dauphin	223	Community	Groundwater
44	Camp Small Valley Hemlock Gsc	Dauphin	220	Transient non-community	Groundwater
45	Schiano Italian Restaurant	Dauphin	200	Transient non-community	Groundwater
46	Yellow Breeches Ed Center	Dauphin	200	Non-transient non-community	Groundwater
47	Kingdom Hall Jehovahs Witness	Dauphin	200	Transient non-community	Groundwater
48	Holiday Inn Express	Dauphin	200	Transient non-community	Groundwater
49	St Johns Luth Ch	Dauphin	200	Transient non-community	Groundwater
50	Hrc Campground	Dauphin	188	Transient non-community	Groundwater