Washington County, Maryland — public water systems

79 active public water systems serve Washington County, reporting 123.6K people served.

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

Active systems

Population served

123.6K

Community systems

Groundwater share

84.8%

Water systems in Washington County

Active public water systems in Washington County, Maryland
#	Water system	County	Population served	Type	Source
1	City of Hagerstown	Washington	92,200	Community	Surface water
2	Boonsboro - Keedysville	Washington	4,250	Community	Surface water
3	Town of Smithsburg Distribution System	Washington	2,500	Community	Purchased surface water
4	Town of Williamsport Distribution System	Washington	2,400	Community	Purchased surface water
5	Town of Hancock	Washington	1,921	Community	Groundwater
6	Sideling Hill State Park Exhibit Rt 68 W	Washington	1,603	Transient non-community	Groundwater
7	Lakeside Village	Washington	1,575	Community	Purchased surface water
8	Town of Sharpsburg	Washington	1,360	Community	Surface water
9	Town of Funkstown Distribution System	Washington	1,300	Community	Purchased surface water
10	Greenbrier State Park	Washington	1,150	Transient non-community	Surface water
11	Highfield	Washington	1,141	Community	Groundwater
12	Ac and T Big Pool	Washington	1,018	Transient non-community	Groundwater
13	Ac and T and Classic Fuels, LLC	Washington	1,015	Transient non-community	Groundwater under influence of surface water
14	Highs of Baltimore	Washington	906	Transient non-community	Groundwater
15	Hagerstown Speedway	Washington	732	Transient non-community	Groundwater
16	Mount Aetna	Washington	688	Community	Groundwater
17	Camp Louise	Washington	606	Transient non-community	Groundwater
18	Warehouse Cinemas Leitersburg	Washington	510	Transient non-community	Groundwater under influence of surface water
19	Town of Clear Spring	Washington	455	Community	Groundwater under influence of surface water
20	Ringgold Church of Christ	Washington	357	Transient non-community	Groundwater
21	Paradise Mennonite School	Washington	355	Non-transient non-community	Groundwater
22	Antietam Recreation Camp	Washington	335	Transient non-community	Groundwater
23	Washington Monument St Pk Ranger Sta	Washington	306	Transient non-community	Groundwater
24	Mason Dixon Dragway	Washington	305	Transient non-community	Groundwater
25	Washington Monument State Park-Picnic	Washington	300	Transient non-community	Groundwater
26	Hagerstown Snug Harbor Koa	Washington	258	Transient non-community	Groundwater
27	Fahrney-Keedy Senior Living Community	Washington	250	Community	Groundwater under influence of surface water
28	Heritage Academy	Washington	240	Non-transient non-community	Groundwater
29	Sandy Hook	Washington	220	Community	Groundwater
30	The Lodge	Washington	210	Transient non-community	Groundwater
31	Saint James School	Washington	200	Community	Groundwater under influence of surface water
32	Ernst Market	Washington	163	Transient non-community	Groundwater
33	Sweeties	Washington	154	Transient non-community	Purchased surface water
34	Big Cork Vineyards	Washington	140	Transient non-community	Groundwater
35	South County Little League	Washington	125	Transient non-community	Groundwater
36	Elk Ridge Lake	Washington	120	Community	Groundwater
37	South Mountain Rod and Gun	Washington	115	Transient non-community	Groundwater
38	Clear Springs Country Diner	Washington	112	Transient non-community	Groundwater
39	Hagerstown Honda Auto Place	Washington	90	Transient non-community	Groundwater under influence of surface water
40	Hagerstown Kia	Washington	90	Transient non-community	Groundwater under influence of surface water
41	Hoffmans Quality Meats	Washington	85	Transient non-community	Groundwater
42	I-70 Auto Mall	Washington	85	Non-transient non-community	Groundwater
43	Wilson Ruritan	Washington	83	Transient non-community	Groundwater
44	Dollar General	Washington	75	Transient non-community	Groundwater
45	Columbus Club of Hagerstown	Washington	68	Transient non-community	Groundwater
46	Woodland Trailer Park	Washington	65	Community	Groundwater
47	State Line Motel	Washington	64	Transient non-community	Groundwater under influence of surface water
48	Pleasant Valley Community Park	Washington	60	Transient non-community	Groundwater
49	South County Park	Washington	60	Transient non-community	Groundwater
50	Ritcheys Totlot, LLC	Washington	60	Non-transient non-community	Groundwater