Tapcensus

Water quality for ZIP code 01778

ZIP 01778 covers Cochituate in 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

Wayland Water Department MA3315000 · Community water system · Ground water · Wayland
Serves 14,096 people Rules violated, past 3 years 1 Unresolved 1 Last sanitary survey Oct 23, 2025 Distance 0.4 mi

Your location is within the outer bounds of this system's EPA service area.

View system details EPA facility report

Other community water systems in Middlesex County

97 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Weston Water Dept.
Weston		 11,391 0 3.3 mi
Sudbury Water District
Sudbury		 18,416 3 3.8 mi
Natick Water and Sewer Division
Natick		 37,006 1 4.9 mi
Framingham Water Dept. (mwra)
Framingham		 72,362 0 5.0 mi
Lincoln Water Dept
Lincoln		 5,593 1 5.5 mi
Waltham Water Department
Waltham		 65,218 1 6.6 mi
Maynard Dpw, Water Division
Maynard		 10,746 3 6.9 mi
Concord Water Dept
Concord		 18,788 1 7.1 mi
Hanscom Family Housing (landings)
Lincoln		 3,067 1 7.8 mi
Woodhaven Elder Housing Committee
Sherborn		 30 0 7.9 mi
Leland Farms
Sherborn		 25 0 8.0 mi
Newton Water Dept. (mwra)
Newton		 88,931 1 8.0 mi
Hanscom Afb
Bedford		 11,789 0 8.4 mi
The Meeting House @ Stow Condo
Stow		 92 0 8.5 mi
Fields at Sherborn Condo Trust
Sherborn		 110 1 8.6 mi
Elizabeth Brook Apartments
Stow		 54 2 8.7 mi
Ashland Water and Sewer Dept.
Ashland		 18,832 1 8.7 mi
Juniper Hill Water Company
Stow		 220 0 8.7 mi
Lexington Water Dept. (mwra)
Lexington		 34,074 1 9.1 mi
Pilot Grove Apartments
Stow		 175 1 9.3 mi
Pilot Grove Apartments II
Stow		 134 1 9.3 mi
Watertown Department of Public Works
Watertown		 35,985 0 9.5 mi
Acton Water Supply District
Acton		 21,285 2 9.5 mi
Pine Hill Condominium
Acton		 95 0 9.6 mi
Marlborough Dpw Water Div. (mwra)
Marlborough		 41,799 0 9.7 mi
All 98 community water systems in Middlesex County
Non-community systems in Middlesex County (108: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
The Rivers School
Weston 		100 1 0
Valley Pond
Weston 		0 0 0
Native Plant Trust Inc.
Framingham 		200 0 0
Freshpure Water @ Moms Natick (vnd)
Natick 		25 0 0
Emerson Hospital
Concord 		1,200 0 0
Pine Hill Elementary School
Sherborn 		480 0 0
Fireside Tavern Sherborn
Sherborn 		170 0 0
Anemotia Realty
Sherborn 		200 0 0
Sherborn Crossing
Sherborn 		25 0 0
Fiske Property
Sherborn 		25 0 0
Unitarian Universalist Area Church
Sherborn 		31 0 0
Sherborn Plaza
Sherborn 		75 0 0
Sherborn Market
Sherborn 		25 0 0
Collings Foundation Ahm
Stow 		200 0 0
Sherborn Town Offices; Police; Library
Sherborn 		25 0 0
Pilgrim Church
Sherborn 		25 0 0
Stow Lower Village/ Beef and Ale
Stow 		100 0 0
Stow Shopping Center
Stow 		100 1 0
Kids a Lot (daycare)
Stow 		145 1 0
Stow House of Pizza
Stow 		25 0 0
Honey Pot Hill Orchards
Stow 		100 1 0
10.0 Gymnastics
Stow 		60 0 0
Phillips Heritage
Stow 		50 0 0
Stow Industrial (flb Incorporated)
Stow 		25 0 0
Stow Municipal Buildings
Stow 		30 1 0
Cpi Radant Technologies, INC
Stow 		110 0 0
Butternut Farm Golf Club
Stow 		150 0 0
Stow Center School
Stow 		644 1 0
Hale Middle School
Stow 		321 0 0
Stow Acres Country Club
Stow 		310 1 1
Stow Fire and Community Center
Stow 		50 0 0
Stow Brook Gulf
Stow 		150 1 0
Metrowest YMCA
Hopkinton 		700 2 2
Nashoba Valley Olympia Inc.
Boxborough 		100 0 0
Minuteman Airfield
Stow 		400 0 0
Wedgewood Pines Country Club
Stow 		100 2 0
New England Laborers Training Academy
Hopkinton 		200 1 0
Assurance Technology Corp.
Carlisle 		75 1 1
Planet Gymnastics/all Seasons Tennis
Acton 		75 1 1
Wee Forest Folk
Carlisle 		25 0 0
Boxborough Municipal Buildings
Boxborough 		600 1 0
Acton Indoor Tennis / Nashoba Sportmans
Acton 		150 0 0
Boxborough Commons (629 Mass Ave)
Boxborough 		100 0 0
Carlisle Congregational Church
Carlisle 		140 0 0
United Church of Christ/daycare
Boxborough 		100 0 0
Carlisle Public School
Carlisle 		725 0 0
Kimball Bates Farm
Carlisle 		150 0 0
First Religious Society
Carlisle 		80 1 0
Hopkinton Country Club
Hopkinton 		200 0 0
Gleason Public Library
Carlisle 		80 0 0
All non-community systems
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.