Water quality for ZIP code 06340
ZIP 06340 covers Conning Towers-Nautilus Park, Groton, Long Hill, Poquonock Bridge, Noank, and Groton Long Point in New London County, Connecticut, one of 33 ZIP codes in the 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 |
|---|---|---|---|---|
| Neighbors of Rogers, LLC Groton |
57 | 4 | 1.8 mi | |
| Noank Fire District Groton |
1,947 | 2 | 2.9 mi | |
| Groton Long Point Association Groton |
2,400 | 2 | 3.3 mi | |
| New London Dept. of Public Utilities New London, Waterford |
27,620 | 1 | 3.4 mi | |
| Mystic Village Apartments Groton |
66 | 2 | 3.6 mi | |
| Scwa, Chriswood Division (cwd) Ledyard |
164 | 0 | 3.6 mi | |
| Ctwc Shoreline Region-Masons Island Stonington |
445 | 0 | 4.1 mi | |
| Aquarion-Mystic Groton, Ledyard, Stonington |
10,788 | 0 | 4.5 mi | |
| Scwa, Tower-Ferry View Division Ledyard |
2,567 | 1 | 4.9 mi | |
| Scwa, Barrett Division (bar) Ledyard |
300 | 0 | 5.1 mi | |
| Ash Water Company, LLC Ledyard |
108 | 0 | 5.3 mi | |
| Waterford Wpca Montville, New London, Waterford |
16,578 | 2 | 5.3 mi | |
| Ledyard Wpca Ledyard Center Ledyard |
3,294 | 3 | 6.2 mi | |
| Scwa, Ledyard Center Division Ledyard |
652 | 0 | 6.3 mi | |
| Ledyard Wpca, Gales Ferry System Groton, Ledyard |
2,369 | 1 | 6.3 mi | |
| Marina Cove Montville |
70 | 1 | 6.9 mi | |
| Aquarion-Arlington Acres Stonington |
392 | 0 | 7.0 mi | |
| Waterford Country School, Inc. Waterford |
180 | 0 | 7.0 mi | |
| Kitemaug Orchard Association, Inc. Montville |
490 | 0 | 7.1 mi | |
| Independence Village Elderly Housing Montville |
55 | 1 | 7.4 mi | |
| Scwa, Hillcrest Division (hlc) Montville |
450 | 0 | 7.6 mi | |
| Montville Water Supply Montville, Waterford |
1,300 | 0 | 7.9 mi | |
| Mountview Apartments Montville |
105 | 3 | 8.4 mi | |
| Scwa, Birchwood Division (bwd) Montville |
108 | 0 | 8.6 mi | |
| Scwa, Mohegan Division Montville |
1,428 | 0 | 8.7 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.