Water quality in Harwinton, Connecticut
Harwinton is in Litchfield County. 348 active public water systems serve the county; 205 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Litchfield County
75 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Garden Lane Apartments Harwinton |
40 | 0 | 1.2 mi | |
| Touchstone N.a.f.i. Litchfield |
43 | 1 | 4.0 mi | |
| Fernwood Rest Home Litchfield |
107 | 2 | 5.2 mi | |
| Aquarion-Litchfield Regional Goshen, Litchfield, Torrington |
3,097 | 0 | 6.6 mi | |
| Ctwc Naugatuck Reg-Thomaston System Plymouth, Thomaston |
3,789 | 0 | 6.9 mi | |
| Ctwc Naugatuck Reg-Terryville System Plymouth |
5,607 | 0 | 7.7 mi | |
| Eldridge Elderly Housing Morris |
40 | 4 | 8.4 mi | |
| Little Brook RD Property Owners Assn New Hartford |
64 | 6 | 8.5 mi | |
| Village Market Place Goshen |
462 | 2 | 8.6 mi | |
| Aquarion-New Hartford New Hartford |
1,872 | 1 | 8.9 mi | |
| Bantam Village Litchfield |
96 | 2 | 9.2 mi | |
| Breezy Knoll Association Litchfield, Morris |
100 | 1 | 9.3 mi | |
| Foxridge Apartments-Well 2 Barkhamsted |
25 | 1 | 10.3 mi | |
| Foxridge Apartments-Well 1 Barkhamsted |
25 | 1 | 10.3 mi | |
| Winsted Water Works Barkhamsted, Winchester |
7,784 | 0 | 10.5 mi | |
| Aquarion-Tyler Lake Goshen |
142 | 0 | 10.8 mi | |
| Rocktree Apartments Barkhamsted |
60 | 0 | 10.9 mi | |
| Barkhamsted Hills LLC Barkhamsted |
50 | 0 | 11.1 mi | |
| Woodhall School, INC Bethlehem |
68 | 1 | 11.6 mi | |
| Watertown Fire District Watertown |
6,718 | 1 | 12.0 mi | |
| Watertown Water & Sewer Authority Middlebury, Waterbury, Watertown |
9,972 | 2 | 12.1 mi | |
| North Purchase Elderly Housing Bethlehem |
72 | 0 | 12.1 mi | |
| Watertown Water & Sewer Westgate Watertown |
600 | 2 | 12.2 mi | |
| Lake Hills Village Condominiums Wolcott |
102 | 3 | 12.7 mi | |
| Rumsey Hall School Washington |
398 | 1 | 13.0 mi |
Non-community systems in Litchfield County (272: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Litchfield County, nearest to Harwinton first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files or the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Connecticut records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.