Water quality in Preston, Connecticut
Preston 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 |
|---|---|---|---|---|
| Lincoln Park Elderly Housing Preston |
80 | 1 | 1.9 mi | |
| Tunnel Hill Mobile Home Park Lisbon |
40 | 1 | 3.9 mi | |
| Lisbon Mobile Homes Lisbon |
155 | 0 | 4.2 mi | |
| Scwa, Ledyard Center Division Ledyard |
652 | 0 | 4.6 mi | |
| Scwa, Mohegan Division Montville |
1,428 | 0 | 5.0 mi | |
| Norwich Public Utilities Bozrah, Franklin, Lebanon and 4 more |
36,163 | 0 | 5.3 mi | |
| Ledyard Wpca Ledyard Center Ledyard |
3,294 | 3 | 5.5 mi | |
| Scwa, Birchwood Division (bwd) Montville |
108 | 0 | 5.6 mi | |
| Ledyard Wpca, Gales Ferry System Groton, Ledyard |
2,369 | 1 | 5.7 mi | |
| Mountview Apartments Montville |
105 | 3 | 5.7 mi | |
| Ctwc Bay Mountain Griswold |
440 | 0 | 5.7 mi | |
| Ash Water Company, LLC Ledyard |
108 | 0 | 5.7 mi | |
| Scwa, Barrett Division (bar) Ledyard |
300 | 0 | 5.8 mi | |
| Meadows Apartments Montville |
301 | 0 | 5.8 mi | |
| Jewett City Water Co-Hill-N-Dale Lisbon |
146 | 0 | 6.0 mi | |
| Thompson Hill Water CO Beechwood Acres Montville |
77 | 3 | 6.1 mi | |
| Sunny Waters Mobile Home Park Norwich |
303 | 0 | 6.3 mi | |
| Kitemaug Orchard Association, Inc. Montville |
490 | 0 | 6.4 mi | |
| Montville Water Supply Montville, Waterford |
1,300 | 0 | 6.4 mi | |
| Jewett City Water Co., S & W System Griswold |
320 | 0 | 6.5 mi | |
| Marina Cove Montville |
70 | 1 | 6.6 mi | |
| Scwa, Tower-Ferry View Division Ledyard |
2,567 | 1 | 6.7 mi | |
| Aquarion-Pleasure Valley Norwich |
328 | 0 | 7.1 mi | |
| Jewett City Water Company Griswold, Lisbon |
6,840 | 3 | 7.1 mi | |
| Ctwc Country Mobile Div. Griswold |
186 | 0 | 7.2 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 Preston 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.