Tap Truth EPA drinking water records, in plain English

County drinking water records

Middlesex County, MA drinking water systems

90 community water systems serve Middlesex County, MA, reporting 1,605,062 people served in all. A system that also serves other counties counts all of its customers here.

23 of them (26%) had at least one health-based violation in the last 10 years. 8 systems still have one unresolved.

52 rely mainly on groundwater and 38 on surface water, counting water bought from other systems.

Their lead service line inventories list 12,203 lead lines, 1,590 galvanized lines that must be replaced and 53,638 lines of unknown material.

6 more systems are placed in Middlesex County, MA by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
90
People served, sum of each system's own figure
1,605,062
Systems with a health-based violation, last 10 years
23
Systems with one unresolved
8
Lead service lines in inventories
12,203

Water systems serving Middlesex County

90 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Cambridge Water Department Cambridge 118,214 Surface water 0 0 2,058
Lowell Regional Water Utility Lowell 115,000 Surface water 1 0 274
Newton Water Dept. (MWRA) Newton 88,415 Purchased surface water 0 0 3
Somerville Water Dept. (MWRA) Somerville 81,045 Purchased surface water 1 0 101
Framingham Water Dept. (MWRA) Framingham 72,362 Purchased surface water 0 0 0
Malden Water Division (MWRA) Malden 66,263 Purchased surface water 1 1 2,460
Waltham Water Department Waltham 65,218 Purchased surface water 0 0 0
Medford Water Dept. (MWRA) Medford 61,700 Purchased surface water 2 0 5,128
Everett Water Dept. (MWRA) Everett 49,075 Purchased surface water 0 1 1,071
Arlington Water Dept. (MWRA) Arlington 46,308 Purchased surface water 0 0 30
Billerica Water Works Pinehurst and land outside it 42,119 Surface water 3 0 0
Marlborough DPW Water Div. (MWRA) Marlborough 41,799 Purchased surface water 0 0 268
Woburn Water Dept. Woburn 40,876 Purchased surface water 0 0 0
Natick Water and Sewer Division Outside cities and towns 37,006 Groundwater 0 1 0
Watertown Water Dept. (MWRA) Watertown 35,329 Purchased surface water 0 0 21
Lexington Water Dept. (MWRA) Lexington 34,074 Purchased surface water 0 0 12
Tewksbury Water Department Outside cities and towns 31,342 Surface water 2 0 0
Melrose Water Division (MWRA) Melrose 29,357 Purchased surface water 1 0 400
Chelmsford Water District Outside cities and towns 28,750 Groundwater 0 0 0
Belmont Water Dept. (MWRA) Belmont 27,442 Purchased surface water 0 0 4
Reading Water Department (MWRA) Reading 27,358 Purchased surface water 1 0 154
Wakefield Water Dept Wakefield 27,090 Surface water 0 0 39
Burlington Water Dept Burlington 26,680 Surface water 0 0 0
Dracut Water Supply District Outside cities and towns 25,808 Purchased surface water 0 0 0
Stoneham Water Dept (MWRA Supply) Stoneham 23,244 Purchased surface water 1 0 0
Winchester Water Dept Winchester 22,970 Surface water 0 0 81
Wilmington Water Dept Wilmington 22,481 Purchased surface water 1 1 0
Acton Water Supply District Outside cities and towns 20,780 Groundwater under direct influence 0 0 0
Hudson Water Supply Hudson and land outside it 20,032 Surface water 0 0 4
Ashland Water and Sewer Dept. Outside cities and towns 18,832 Groundwater 0 0 0
Concord Water Dept West Concord and land outside it 18,788 Surface water 2 1 94
Westford Water Department Outside cities and towns 18,680 Groundwater under direct influence 0 0 0
Sudbury Water District Outside cities and towns 18,416 Groundwater 1 1 0
North Reading Water Dept. Outside cities and towns 16,379 Purchased surface water 4 0 0
Holliston Water Department Outside cities and towns 15,713 Groundwater 4 0 0
Bedford Water Dept. Outside cities and towns 14,394 Purchased surface water 0 0 0
Wayland Water Department Cochituate and land outside it 13,196 Groundwater 0 0 0
Hopkinton Water Department Hopkinton and land outside it 12,586 Groundwater 0 0 1
Weston Water Dept. Outside cities and towns 11,941 Purchased surface water 0 0 0
Hanscom AFB Hanscom AFB and Lexington 11,789 Purchased surface water 1 0 0
Maynard DPW, Water Division Maynard 10,401 Groundwater 1 0 0
Kenwood Water District Outside cities and towns 9,620 Purchased surface water 0 0 0
Littleton Water Department Littleton Common and land outside it 9,611 Groundwater 0 0 0
Pepperell DPW Water Division Pepperell and East Pepperell and land outside them 9,217 Groundwater 0 0 0
Ayer DPW Water Division Devens and Ayer and land outside them 8,479 Groundwater 0 0 0
North Chelmsford Water Dist Outside cities and towns 7,498 Groundwater 0 0 0
Devens Massdevelopment Devens 6,500 Groundwater 0 0 0
Townsend Water Department Townsend and land outside it 6,500 Groundwater 0 0 0
Lincoln Water Dept Outside cities and towns 5,593 Surface water 1 0 0
Groton Water Department Groton and land outside it 5,456 Groundwater 0 0 0
Tyngsborough Water District Outside cities and towns 4,416 Purchased surface water 0 0 0
Shirley Water District Shirley and land outside it 4,121 Groundwater 0 1 0
Mci Shirley Outside cities and towns 3,500 Groundwater 0 0 0
Hanscom Family Housing (Landings) Hanscom AFB 3,067 Purchased surface water 0 0 0
East Chelmsford Water District Outside cities and towns 2,800 Purchased surface water 0 0 0
Tewksbury Hospital Outside cities and towns 2,500 Groundwater 0 0 0
West Groton Water Supply District Outside cities and towns 1,853 Groundwater 0 0 0
Applewood Community Corporation Outside cities and towns 500 Groundwater 0 0 0
Paddock Estates Outside cities and towns 463 Groundwater 0 0 0
Brook Village Condominium Outside cities and towns 400 Groundwater 0 0 0
Codman Hill Condominium Outside cities and towns 360 Groundwater 0 0 0
Harvard Ridge Condominium Outside cities and towns 350 Groundwater 2 0 0
Dunstable Water Department Outside cities and towns 337 Groundwater 0 0 0
Villages at Stow Outside cities and towns 300 Groundwater 0 0 0
Juniper Hill Water Company Outside cities and towns 220 Groundwater 0 0 0
Pilot Grove Apartments Outside cities and towns 175 Groundwater 0 0 0
River Crossing Condominium Outside cities and towns 150 Groundwater 0 0 0
Pilot Grove Apartments II Outside cities and towns 134 Groundwater 0 0 0
Arbor Glen Condominiums Outside cities and towns 132 Groundwater 0 0 0
Regency at Stow Condominiums Outside cities and towns 132 Groundwater 1 0 0
Woodland Ridge Outside cities and towns 125 Groundwater 0 0 0
Colony Heights Condominium Outside cities and towns 120 Groundwater 1 0 0
Deerfield Estates Outside cities and towns 100 Groundwater 0 0 0
Estates at Highland Ridge Outside cities and towns 100 Groundwater 0 0 0
Curtis Hill Condominium Outside cities and towns 96 Groundwater 0 0 0
Pine Hill Condominium Outside cities and towns 95 Groundwater 1 0 0
The Meeting House @ Stow Condo Outside cities and towns 92 Groundwater 0 0 0
Liberty House Condominium Outside cities and towns 80 Groundwater 1 0 0
The Preserve at Hopkinton Condo Outside cities and towns 80 Groundwater 1 0 0
Carriage House Condominium Outside cities and towns 68 Groundwater 0 0 0
Benchmark Condominiums Outside cities and towns 60 Groundwater 0 1 0
Haystack Estates Outside cities and towns 60 Groundwater 0 0 0
Maillet Woods Condominiums Outside cities and towns 55 Groundwater 0 0 0
Elizabeth Brook Apartments Outside cities and towns 54 Groundwater 0 0 0
Still Meadow Village Condominiums Outside cities and towns 50 Groundwater 0 0 0
Village at Highland Park Outside cities and towns 50 Groundwater 0 0 0
Benfield Farms Outside cities and towns 50 Groundwater 0 0 0
Centre Village Apartments Outside cities and towns 36 Groundwater 0 0 0
Woodhaven Elder Housing Committee Outside cities and towns 30 Groundwater 0 0 0
Leland Farms Outside cities and towns 25 Groundwater 0 0 0

Systems placed by county record in Middlesex County

6 systems

EPA has no service area map for these systems. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Bedford VA Hospital (Rogers Mem. Hosp.) County on record 177 Purchased surface water 0 0 0
Fields at Sherborn Condo Trust County on record 110 Groundwater 0 0 0
Enclave at Boxborough County on record 100 Groundwater 0 0 0
Woodward Village County on record 54 Groundwater 0 0 0
The Village at Shepley Hill County on record 52 Groundwater 0 0 0
Garrison Place County on record 32 Groundwater 0 0 0

Cities and towns in Middlesex County

36 places

Back to Massachusetts

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations