Water quality for ZIP code 01770
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 |
|---|---|---|---|---|
| Leland Farms Sherborn |
25 | 0 | 0.7 mi | |
| Woodhaven Elder Housing Committee Sherborn |
30 | 0 | 0.8 mi | |
| Natick Water and Sewer Division Natick |
37,006 | 1 | 3.9 mi | |
| Holliston Water Department Holliston |
15,139 | 1 | 4.2 mi | |
| Ashland Water and Sewer Dept. Ashland |
18,832 | 1 | 5.0 mi | |
| Framingham Water Dept. (mwra) Framingham |
72,362 | 0 | 6.0 mi | |
| The Preserve at Hopkinton Condo Hopkinton |
80 | 0 | 8.2 mi | |
| Maillet Woods Condominiums Hopkinton |
55 | 0 | 8.4 mi | |
| Hopkinton Water Department Hopkinton |
12,680 | 0 | 8.5 mi | |
| Estates at Highland Ridge Hopkinton |
100 | 0 | 8.6 mi | |
| Deerfield Estates Hopkinton |
100 | 0 | 8.6 mi | |
| Village at Highland Park Hopkinton |
50 | 0 | 8.7 mi | |
| Wayland Water Department Wayland |
14,096 | 1 | 8.7 mi | |
| Weston Water Dept. Weston |
11,391 | 0 | 9.5 mi | |
| Sudbury Water District Sudbury |
18,416 | 3 | 10.8 mi | |
| Newton Water Dept. (mwra) Newton |
88,931 | 1 | 10.9 mi | |
| Marlborough Dpw Water Div. (mwra) Marlborough |
41,799 | 0 | 12.2 mi | |
| Waltham Water Department Waltham |
65,218 | 1 | 12.8 mi | |
| Lincoln Water Dept Lincoln |
5,593 | 1 | 13.7 mi | |
| Watertown Department of Public Works Watertown |
35,985 | 0 | 13.8 mi | |
| Hudson Water Supply Hudson |
20,032 | 1 | 14.2 mi | |
| Maynard Dpw, Water Division Maynard |
10,746 | 3 | 14.3 mi | |
| Juniper Hill Water Company Stow |
220 | 0 | 14.9 mi | |
| Belmont Water Dept. (mwra) Belmont |
27,442 | 1 | 15.0 mi | |
| Elizabeth Brook Apartments Stow |
54 | 2 | 15.2 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.