Hartford County, Connecticut — public water systems

219 active public water systems serve Hartford County, reporting 836K people served.

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

Active systems

219

Population served

836K

Community systems

Groundwater share

90.9%

Water systems in Hartford County

Active public water systems in Hartford County, Connecticut
#	Water system	County	Population served	Type	Source
1	Metropolitan District Commission	Hartford	390,887	Community	Surface water
2	Ctwc - Northern Reg-Western System	Hartford	101,313	Community	Surface water
3	New Britain Water Department	Hartford	73,534	Community	Surface water
4	Bristol Water Department	Hartford	52,079	Community	Surface water
5	Manchester Water Department	Hartford	51,198	Community	Surface water
6	Southington Water Department	Hartford	43,069	Community	Surface water
7	Hazardville Water Company	Hartford	18,544	Community	Groundwater
8	Aquarion-Plainville Regional	Hartford	18,231	Community	Groundwater
9	Ctwc - Unionville System	Hartford	14,693	Community	Purchased surface water
10	Aquarion-Simsbury Regional	Hartford	14,691	Community	Groundwater
11	Avon Water Co	Hartford	11,590	Community	Groundwater
12	Kensington Fire District	Hartford	7,553	Community	Purchased surface water
13	Ctwc - Naugatuck Reg-Collinsville Sys	Hartford	6,324	Community	Surface water
14	Berlin Water Control Commission	Hartford	5,128	Community	Purchased surface water
15	Worthington Fire District	Hartford	2,875	Community	Purchased surface water
16	Connecticut Correctional Institute	Hartford	2,385	Community	Groundwater
17	Salmon Brook District Water Dept	Hartford	2,151	Community	Groundwater
18	Tariffville Fire District Water Dept	Hartford	1,477	Community	Groundwater
19	Aquarion-Marlborough	Hartford	1,348	Community	Groundwater
20	Talcott Mountain S.P.	Hartford	793	Transient non-community	Groundwater
21	Lake Garda School	Hartford	715	Non-transient non-community	Groundwater
22	Penwood State Park/Main Park Well	Hartford	700	Transient non-community	Groundwater
23	Cherry Brook School	Hartford	615	Non-transient non-community	Groundwater
24	Aquarion-Suffield	Hartford	595	Community	Groundwater
25	Elisabeth M. Bennet Academy	Hartford	536	Non-transient non-community	Purchased surface water
26	Eastbury School	Hartford	523	Non-transient non-community	Groundwater
27	Ctwc - Redwood Farms Division	Hartford	424	Community	Groundwater
28	Wells Road Intermediate School	Hartford	405	Non-transient non-community	Groundwater
29	The Masters School	Hartford	372	Non-transient non-community	Groundwater
30	Aquarion-North Mountain	Hartford	370	Non-transient non-community	Purchased surface water
31	Turkey Hill of East Granby, LLC	Hartford	360	Community	Groundwater
32	Gqc Well Commission	Hartford	360	Community	Groundwater
33	Kelly Lane Primary School	Hartford	357	Non-transient non-community	Groundwater
34	Newington Va Medical Center-Building 2e	Hartford	335	Non-transient non-community	Purchased surface water
35	Ethel Walker School	Hartford	325	Community	Groundwater
36	Hartland Elem Sch & Town Bldgs	Hartford	300	Non-transient non-community	Groundwater
37	Apple Rehab	Hartford	238	Community	Purchased surface water
38	Ctwc - Chimney Hill	Hartford	227	Community	Purchased surface water
39	Manchester Cong. of Jehovahs Witnesses	Hartford	222	Transient non-community	Groundwater
40	Cannabis Retailer at 195 Albany Turnpike	Hartford	214	Transient non-community	Groundwater
41	Old Newgate Ridge Water Company Inc.	Hartford	208	Community	Groundwater
42	Winding Trails Recreation Assn - Upper	Hartford	207	Transient non-community	Groundwater
43	Winding Trails Recreation Assn - Lower	Hartford	207	Transient non-community	Groundwater
44	Shaker Heights Water Company	Hartford	172	Community	Groundwater
45	Ctwc - Sachem Village Condo	Hartford	166	Community	Groundwater
46	Marlborough Health Care Center, Inc.	Hartford	165	Community	Groundwater
47	Chelsea Common Condominium Association	Hartford	126	Community	Groundwater
48	Ccarc Inc..	Hartford	125	Non-transient non-community	Groundwater
49	Cadence Academy	Hartford	112	Non-transient non-community	Groundwater
50	Newington Va Medical Center-Building 1	Hartford	110	Non-transient non-community	Purchased surface water