Water quality in Griswold, Connecticut
Griswold is in New London County. 392 active public water systems serve the county; 204 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 New London County
87 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Jewett City Water Co., S & W System Griswold |
320 | 0 | 0.7 mi | |
| Ctwc Country Mobile Div. Griswold |
186 | 0 | 1.6 mi | |
| Ashland Pond Mobile Home Park Griswold |
74 | 3 | 2.4 mi | |
| Griswold MHP LLC Griswold |
99 | 3 | 3.0 mi | |
| Ctwc Bay Mountain Griswold |
440 | 0 | 3.2 mi | |
| Voluntown Housing Authority Voluntown |
42 | 2 | 3.5 mi | |
| Jewett City Water Co-Hill-N-Dale Lisbon |
146 | 0 | 4.9 mi | |
| Tunnel Hill Mobile Home Park Lisbon |
40 | 1 | 4.9 mi | |
| Lisbon Mobile Homes Lisbon |
155 | 0 | 5.7 mi | |
| Ctwc Sdc Water Voluntown |
216 | 0 | 6.1 mi | |
| Sunny Waters Mobile Home Park Norwich |
303 | 0 | 6.8 mi | |
| Preston Plains Water Company Preston |
550 | 2 | 7.0 mi | |
| Aquarion-Pleasure Valley Norwich |
328 | 0 | 7.0 mi | |
| Sprague Water & Sewer Authority Sprague |
1,058 | 2 | 8.3 mi | |
| Lincoln Park Elderly Housing Preston |
80 | 1 | 8.4 mi | |
| Norwich Public Utilities Bozrah, Franklin, Lebanon and 4 more |
36,163 | 0 | 9.3 mi | |
| Scwa, North Stonington Division (nst) North Stonington |
1,860 | 1 | 10.2 mi | |
| Scwa, Ledyard Center Division Ledyard |
652 | 0 | 10.7 mi | |
| Ledyard Wpca Ledyard Center Ledyard |
3,294 | 3 | 10.9 mi | |
| Scwa, Mohegan Division Montville |
1,428 | 0 | 11.2 mi | |
| Meadows Apartments Montville |
301 | 0 | 11.3 mi | |
| Northstone Gardens North Stonington |
79 | 3 | 11.5 mi | |
| Thompson Hill Water CO Beechwood Acres Montville |
77 | 3 | 11.6 mi | |
| Scwa, Cedar Ridge Division North Stonington |
370 | 0 | 11.6 mi | |
| Aquarion-Arlington Acres Stonington |
392 | 0 | 11.7 mi |
Non-community systems in New London County (304: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to New London County, nearest to Griswold 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.