Water quality in Ledyard, Connecticut
Ledyard 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
Other community water systems in New London County
87 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Ash Water Company, LLC Ledyard |
108 | 0 | 1.0 mi | |
| Scwa, Chriswood Division (cwd) Ledyard |
164 | 0 | 1.3 mi | |
| Scwa, Ledyard Center Division Ledyard |
652 | 0 | 1.5 mi | |
| Scwa, Tower-Ferry View Division Ledyard |
2,567 | 1 | 2.1 mi | |
| Ledyard Wpca Ledyard Center Ledyard |
3,294 | 3 | 2.5 mi | |
| Ledyard Wpca, Gales Ferry System Groton, Ledyard |
2,369 | 1 | 2.7 mi | |
| Mystic Village Apartments Groton |
66 | 2 | 2.8 mi | |
| Marina Cove Montville |
70 | 1 | 4.2 mi | |
| Kitemaug Orchard Association, Inc. Montville |
490 | 0 | 4.2 mi | |
| Neighbors of Rogers, LLC Groton |
57 | 4 | 4.5 mi | |
| Aquarion-Arlington Acres Stonington |
392 | 0 | 4.7 mi | |
| Lincoln Park Elderly Housing Preston |
80 | 1 | 4.8 mi | |
| Scwa, Mohegan Division Montville |
1,428 | 0 | 4.9 mi | |
| Mountview Apartments Montville |
105 | 3 | 5.0 mi | |
| Groton Utilities Groton, Ledyard |
30,200 | 1 | 5.0 mi | |
| Montville Water Supply Montville, Waterford |
1,300 | 0 | 5.0 mi | |
| Scwa, Birchwood Division (bwd) Montville |
108 | 0 | 5.1 mi | |
| Preston Plains Water Company Preston |
550 | 2 | 5.2 mi | |
| Independence Village Elderly Housing Montville |
55 | 1 | 5.4 mi | |
| Aquarion-Mystic Groton, Ledyard, Stonington |
10,788 | 0 | 5.6 mi | |
| Scwa, Hillcrest Division (hlc) Montville |
450 | 0 | 5.9 mi | |
| Noank Fire District Groton |
1,947 | 2 | 6.6 mi | |
| New London Dept. of Public Utilities New London, Waterford |
27,620 | 1 | 6.6 mi | |
| Waterford Country School, Inc. Waterford |
180 | 0 | 6.7 mi | |
| Scwa, North Stonington Division (nst) North Stonington |
1,860 | 1 | 6.9 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 Ledyard 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.