Water quality for ZIP code 01431
Middlesex County, Massachusetts, one of 81 ZIP codes in the county. 206 active public water systems serve the county; 85 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Middlesex County
97 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| West Groton Water Supply District Groton |
1,853 | 0 | 11.1 mi | |
| Woodland Ridge Shirley |
125 | 0 | 11.2 mi | |
| Pepperell Dpw Water Division Pepperell |
9,217 | 0 | 11.5 mi | |
| Shirley Water District Shirley |
4,165 | 4 | 12.5 mi | |
| Still Meadow Village Condominiums Groton |
50 | 0 | 13.9 mi | |
| McI Shirley Shirley |
3,500 | 0 | 13.9 mi | |
| The Village at Shepley Hill Groton |
52 | 0 | 14.3 mi | |
| Devens Massdevelopment Ayer |
6,500 | 0 | 14.6 mi | |
| Groton Water Department Groton |
5,017 | 0 | 15.1 mi | |
| Ayer Dpw Water Division Ayer |
8,479 | 1 | 15.4 mi | |
| Dunstable Water Department Dunstable |
337 | 1 | 17.7 mi | |
| Haystack Estates Westford |
60 | 0 | 18.0 mi | |
| Harvard Ridge Condominium Boxborough |
350 | 1 | 19.3 mi | |
| Brook Village Condominium Boxborough |
400 | 0 | 19.4 mi | |
| Codman Hill Condominium Boxborough |
360 | 0 | 19.6 mi | |
| Paddock Estates Boxborough |
463 | 1 | 19.7 mi | |
| Littleton Water Department Littleton |
9,334 | 1 | 20.0 mi | |
| Enclave at Boxborough Boxborough |
100 | 1 | 20.6 mi | |
| Tyngsborough Water District Tyngsborough |
4,416 | 0 | 20.6 mi | |
| Westford Water Department Westford |
18,848 | 1 | 20.8 mi | |
| Carriage House Condominium Boxborough |
68 | 0 | 20.9 mi | |
| Centre Village Apartments Boxborough |
36 | 1 | 21.1 mi | |
| River Crossing Condominium Tyngsborough |
150 | 0 | 21.2 mi | |
| Colony Heights Condominium Tyngsborough |
120 | 0 | 21.3 mi | |
| Curtis Hill Condominium Tyngsborough |
96 | 0 | 21.3 mi |
Non-community systems in Middlesex County (108: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Middlesex 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 Massachusetts 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.