Litchfield County, Connecticut — public water systems

346 active public water systems serve Litchfield County, reporting 117.5K people served.

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

Active systems

346

Population served

117.5K

Community systems

Groundwater share

98%

Water systems in Litchfield County

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Active public water systems in Litchfield County, Connecticut
#	Water system	County	Population served	Type	Source
1	Torrington Water Company	Litchfield	37,915	Community	Surface water
2	Watertown Water & Sewer Authority	Litchfield	9,972	Community	Purchased surface water
3	Winsted Water Works	Litchfield	7,784	Community	Surface water
4	Watertown Fire District	Litchfield	6,718	Community	Groundwater
5	Ctwc - Naugatuck Reg-Terryville System	Litchfield	5,607	Community	Groundwater
6	Ctwc - Naugatuck Reg-Thomaston System	Litchfield	3,789	Community	Groundwater
7	Aquarion-Litchfield Regional	Litchfield	3,097	Community	Purchased surface water
8	Aquarion-Salisbury	Litchfield	1,932	Community	Surface water
9	Aquarion-New Hartford	Litchfield	1,872	Community	Groundwater
10	Aquarion-North Canaan	Litchfield	1,481	Community	Groundwater
11	Lone Oak Campground	Litchfield	1,250	Transient non-community	Groundwater
12	Aquarion-Woodbury	Litchfield	1,209	Community	Groundwater
13	Aquarion-Norfolk	Litchfield	913	Community	Surface water
14	Woodlake Tax District	Litchfield	912	Community	Groundwater
15	Kenmont & Kenwood Camps	Litchfield	825	Transient non-community	Groundwater
16	Aquarion-Kent	Litchfield	817	Community	Groundwater
17	Sharon Water & Sewer Commission	Litchfield	803	Community	Surface water
18	Shepaug Middle/High School	Litchfield	770	Non-transient non-community	Groundwater
19	Housatonic Valley Regional Hs	Litchfield	750	Non-transient non-community	Groundwater
20	Clc Owners Corporation	Litchfield	736	Community	Groundwater
21	Kent School Corp (Valley Campus)	Litchfield	722	Community	Groundwater
22	Ski Sundown, Inc..	Litchfield	600	Transient non-community	Groundwater
23	Watertown Water & Sewer - Westgate	Litchfield	600	Community	Purchased groundwater
24	Kent Falls State Park	Litchfield	573	Transient non-community	Groundwater
25	Salisbury School	Litchfield	520	Community	Groundwater
26	Sunny Valley Tax District	Litchfield	500	Community	Groundwater
27	Camp Jewell-Sunrise	Litchfield	500	Non-transient non-community	Groundwater
28	Camp Jewell-Senior	Litchfield	500	Non-transient non-community	Groundwater
29	Aquarion-Falls Village	Litchfield	488	Community	Groundwater
30	Village Market Place	Litchfield	462	Community	Groundwater
31	Bucks Rock Camp	Litchfield	450	Transient non-community	Groundwater
32	Bethlehem Elementary School/District 14	Litchfield	406	Non-transient non-community	Groundwater
33	Rumsey Hall School	Litchfield	398	Community	Groundwater
34	Aquarion-Meadowbrook	Litchfield	396	Community	Groundwater
35	Antolini Elementary School	Litchfield	385	Non-transient non-community	Groundwater
36	Barkhamsted Elementary School	Litchfield	360	Non-transient non-community	Groundwater
37	Camp Mattatuck- Well #2 System	Litchfield	350	Transient non-community	Groundwater
38	Washington Montessori School	Litchfield	350	Non-transient non-community	Groundwater
39	Aquarion-Carmen Hill	Litchfield	322	Community	Groundwater
40	Candlewood Trails Association, Inc..	Litchfield	312	Community	Groundwater
41	The Frederick Gunn School, Inc..	Litchfield	300	Community	Groundwater
42	Birch Groves Association, Inc.	Litchfield	300	Community	Groundwater
43	Lake Warramaug/Campground Well	Litchfield	300	Transient non-community	Groundwater
44	Lake Warramaug/Day Use Well	Litchfield	300	Transient non-community	Groundwater
45	Edmund D. Strang Scout Reservation	Litchfield	300	Transient non-community	Groundwater
46	Macedonia Brook S.P./Camp Site #30	Litchfield	287	Transient non-community	Groundwater
47	Old Farms Condominium Association Inc.	Litchfield	285	Community	Groundwater
48	Torrington Country Club	Litchfield	280	Non-transient non-community	Groundwater
49	West Hill Lake Water Assoc.	Litchfield	276	Non-transient non-community	Groundwater
50	Aquarion-Forest Hills	Litchfield	265	Community	Groundwater

Also serving Litchfield County

These systems serve several counties, including Litchfield County. EPA lists another county first for them, so they are not included in the counts above.

Multi-county water systems that also serve Litchfield County, Connecticut
Water system	County	Population served	Type	Source
Aquarion-New Milford Regional	Fairfield + 1 more	13,331	Community	Groundwater