Massachusetts water providers

Find published drinking-water records, providers, and official agency resources for Massachusetts. Review sources, sample dates, and coverage.

Official drinking-water resources

• Massachusetts Department of Environmental Protection - Drinking Water
• Massachusetts Energy and Environmental Affairs Data Portal - Drinking Water

The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.

Community systems appear first. Sort: Population served · A–Z

Public water systems

1,606 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.

• MwraMA6000000 · CWS · Population served: 2,580,000
• Boston Water And Sewer Commission (MWRA)MA3035000 · CWS · Population served: 675,647
• Worcester Dpwp, Water Supply DivisionMA2348000 · CWS · Population served: 206,518
• Springfield Water And Sewer CommissionMA1281000 · CWS · Population served: 169,170
• Lowell Regional Water UtilityMA3160000 · CWS · Population served: 120,418
• Cambridge Water DepartmentMA3049000 · CWS · Population served: 118,214
• Quincy Water Dept. (MWRA)MA3243000 · CWS · Population served: 106,000
• Brockton Water DepartmentMA4044000 · CWS · Population served: 105,788
• Inima USA / Aquaria LLCMA4076004 · CWS · Population served: 105,643
• Lynn Water And Sewer CommMA3163000 · CWS · Population served: 101,253
• City of New Bedford DpiMA4201000 · CWS · Population served: 101,079
• Falmouth Water DeptMA4096000 · CWS · Population served: 97,551
• Fall River Water DepartmentMA4095000 · CWS · Population served: 94,000
• Salem And Beverly Water Supply BoardMA3030001 · CWS · Population served: 90,330
• Lawrence Water WorksMA3149000 · CWS · Population served: 89,143
• Newton Water Dept. (MWRA)MA3207000 · CWS · Population served: 88,931
• Somerville Water Dept. (MWRA)MA3274000 · CWS · Population served: 81,045
• Framingham Water Dept. (MWRA)MA3100000 · CWS · Population served: 72,362
• Malden Water Division (MWRA)MA3165000 · CWS · Population served: 66,263
• Waltham Water DepartmentMA3308000 · CWS · Population served: 65,218
• Dennis Water DistrictMA4075000 · CWS · Population served: 65,000
• Brookline Water And Sewer DivisionMA3046000 · CWS · Population served: 63,191
• Revere Water Division (MWRA)MA3248000 · CWS · Population served: 62,186
• Taunton Water DivisionMA4293000 · CWS · Population served: 62,165
• Medford Water Dept. (MWRA)MA3176000 · CWS · Population served: 61,700
• Haverhill Water DeptMA3128000 · CWS · Population served: 61,277
• Weymouth Water DepartmentMA4336000 · CWS · Population served: 57,871
• Upper Cape Regional Water CooperativeMA4261024 · CWS · Population served: 56,250
• Chicopee Water Dept (MWRA)MA1061000 · CWS · Population served: 55,560
• Peabody Water Dept.MA3229000 · CWS · Population served: 54,481
• Methuen Water DeptMA3181000 · CWS · Population served: 53,059
• Centerville Osterville Marstons Mills WdMA4020002 · CWS · Population served: 50,000
• Everett Water Dept. (MWRA)MA3093000 · CWS · Population served: 49,075
• Beverly Water DeptMA3030000 · CWS · Population served: 47,461
• Plymouth Water DepartmentMA4239000 · CWS · Population served: 47,100
• Randolph/Holbrook Joint Water BoardMA4244001 · CWS · Population served: 46,519
• Attleboro Water DeptMA4016000 · CWS · Population served: 46,461
• Arlington Water Dept. (MWRA)MA3010000 · CWS · Population served: 46,308
• Weir River Water SystemMA4131000 · CWS · Population served: 45,339
• Salem Water DepartmentMA3258000 · CWS · Population served: 44,480
• Pittsfield Dpu Water DeptMA1236000 · CWS · Population served: 43,927
• Billerica Water WorksMA3031000 · CWS · Population served: 42,119
• Fitchburg Dpw Division of Water SupplyMA2097000 · CWS · Population served: 41,946
• Marlborough Dpw Water Div. (MWRA)MA2170000 · CWS · Population served: 41,799
• Leominster Water DivisionMA2153000 · CWS · Population served: 41,683
• Dedham Westwood Water Dist.MA3073000 · CWS · Population served: 41,630
• Westfield Dpwwater DivisionMA1329000 · CWS · Population served: 41,094
• Woburn Water Dept.MA3347000 · CWS · Population served: 40,876
• Chelsea Water Dept. (MWRA)MA3057000 · CWS · Population served: 40,787
• Amherst Dpw Water DivisionMA1008000 · CWS · Population served: 39,263
• Harwich Water DepartmentMA4126000 · CWS · Population served: 39,144
• Braintree Water And Sewer Dept.MA4040000 · CWS · Population served: 39,143
• Yarmouth Water DepartmentMA4351000 · CWS · Population served: 38,900
• Shrewsbury Water DepartmentMA2271000 · CWS · Population served: 38,325
• Holyoke Water WorksMA1137000 · CWS · Population served: 37,838
• Gloucester Public Utility DivisionMA3107000 · CWS · Population served: 37,440
• Natick Water And Sewer DivisionMA3198000 · CWS · Population served: 37,006
• Mashpee Water DistrictMA4172039 · CWS · Population served: 36,922
• Andover Water DeptMA3009000 · CWS · Population served: 36,569
• Watertown Department of Public WorksMA3314000 · CWS · Population served: 35,985
• Randolph Water DepartmentMA4244000 · CWS · Population served: 35,114
• Brewster Water DepartmentMA4041000 · CWS · Population served: 35,000
• Hyannis Water System, Town of BarnstableMA4020004 · CWS · Population served: 35,000
• Lexington Water Dept. (MWRA)MA3155000 · CWS · Population served: 34,074
• Marshfield Water DepartmentMA4171000 · CWS · Population served: 34,000
• Franklin Water DepartmentMA2101000 · CWS · Population served: 33,706
• Abington/Rockland Joint Wtr. WorksMA4001000 · CWS · Population served: 33,387
• Needham Water DeptMA3199000 · CWS · Population served: 31,664
• North Attleboro Water DeptMA4211000 · CWS · Population served: 31,410
• Tewksbury Water DepartmentMA3295000 · CWS · Population served: 31,342
• North Andover Water DeptMA3210000 · CWS · Population served: 30,915
• Milford Water DepartmentMA2185000 · CWS · Population served: 30,379
• Chatham Water DepartmentMA4055000 · CWS · Population served: 30,000
• Melrose Water Division (MWRA)MA3178000 · CWS · Population served: 29,938
• Norwood Water Dept. (MWRA)MA4220000 · CWS · Population served: 29,909
• Mattapoisett River Valley W.D.MA4173001 · CWS · Population served: 29,600
• Northampton Water DivisionMA1214000 · CWS · Population served: 29,571
• Wellesley Water DivisionMA3317000 · CWS · Population served: 29,550
• Stoughton Water DepartmentMA4285000 · CWS · Population served: 29,281
• West Springfield Dpw Water DivisionMA1325000 · CWS · Population served: 28,835
• Chelmsford Water DistrictMA3056000 · CWS · Population served: 28,750
• Agawam Water DepartmentMA1005000 · CWS · Population served: 28,692
• Bridgewater Water DepartmentMA4042000 · CWS · Population served: 28,633
• Milton Water Dept. (MWRA)MA3189000 · CWS · Population served: 28,630
• Danvers Water Dept.MA3071000 · CWS · Population served: 28,087
• Saugus Water Dept. (MWRA)MA3262000 · CWS · Population served: 27,844
• Wannacomet Water CompanyMA4197000 · CWS · Population served: 27,703
• Belmont Water Dept. (MWRA)MA3026000 · CWS · Population served: 27,442
• Wakefield Water DeptMA3305000 · CWS · Population served: 27,090
• Reading Water Department (MWRA)MA3246000 · CWS · Population served: 26,262
• Burlington Water DeptMA3048000 · CWS · Population served: 25,864
• Dracut Water Supply DistrictMA3079000 · CWS · Population served: 25,808
• Easton Water DivMA4088000 · CWS · Population served: 25,058
• Dartmouth Water DivisionMA4072000 · CWS · Population served: 24,696
• Walpole Water DeptMA4307000 · CWS · Population served: 24,070
• Oak Bluffs Water DistrictMA4221000 · CWS · Population served: 24,000
• Stoneham Water Dept (MWRA SUPPLY)MA3284000 · CWS · Population served: 23,244
• Sandwich Water DistrictMA4261000 · CWS · Population served: 23,000
• Winchester Water DeptMA3344000 · CWS · Population served: 22,970
• Canton Water DeptMA4050000 · CWS · Population served: 22,766