Gas Leak Maps

Every year, Massachusetts gas distribution utilities are required to report the location of gas leaks and leaks that were repaired in their territories to the Department of Public Utilities. HEET uses the reports to create the maps and information below. Use these maps to zoom in on your home, school, or business to find local gas leaks. Remember:

  • The maps are snapshots in time as of the last day covered by the report, December 31 of each year
  • Any one leak could have been repaired since or new ones developed
  • Independent researchers typically find 1.5 to 3 times as many leaks as utilities report
  • Google Maps places map pins on buildings. The leaks are on public streets, not inside buildings.
  • If you are experiencing difficulties viewing the maps, email us.

We share our geocoded leaks data under a Creative Commons license. Please contact us directly if you would like a copy.

You can learn more about HEET’s mapping process here.


By Utility
Unrepaired Leaks 2019
Repaired Leaks 2019
Totals1572811401
Berkshire Gas116263
Columbia Gas19462604
Eversource Energy25831147
Fitchburg Gas1419
Liberty Utilities481402
National Grid - Boston Gas96236308
National Grid - Colonial Gas965658

By Municipality
Unrepaired Leaks 2019
Repaired Leaks 2019
Abington4721
Acton21333
Acushnet95
Adams1711
Agawam3766
Amesbury1722
Amherst45
Andover5475
Arlington259197
Ashland2411
Attleboro4684
Auburn184
Avon36
Ayer248
Barnstable3542
Bedford7843
Bellingham1014
Belmont12993
Beverly142149
Billerica13357
Boston (downtown)205207
Boston (whole city)16031339
Bourne2924
Boxboro42
Boxford164
Boylston00
Braintree165111
Bridgewater2115
Brighton6577
Brockton130144
Brookfield326
Brookline190167
Burlington8247
Buzzards Bay56
Cambridge20298
Canton2426
Carlisle1912
Carver41
Centerville1514
Charlestown4227
Chatham3319
Chelmsford13932
Chelsea3157
Cheshire22
Chicopee55111
Clinton1532
Cohasset8629
Concord16362
Cotuit35
Dalton27
Danvers10783
Dartmouth4718
Dedham14262
Deerfield22
Dennis1524
Dighton118
Dorchester408318
Dover01
Dracut8816
Dudley488
Duxbury2717
East Boston62108
East Bridgewater107
East Brookfield152
East Longmeadow3953
Easthampton1421
Easton1512
Essex52
Everett6597
Fairhaven10719
Fall River238253
Falmouth3353
Fitchburg1113
Florence917
Foxboro3216
Framingham12257
Franklin5142
Gardner21
Georgetown1414
Gloucester7537
Grafton354
Granby03
Great Barrington27
Greenfield628
Groton395
Groveland229
Hadley05
Halifax17
Hamilton (area)56
Hampden45
Hanover3225
Hanson88
Harvard174
Harwich1627
Hatfield10
Haverhill14793
Hingham11471
Holbrook1013
Holden115
Holliston3810
Hopedale72
Hopkinton448
Hudson3223
Hull5080
Hyannis1731
Hyde Park12662
Indian Orchard1719
Ipswich147
Jamaica Plain7468
Kingston194
Lakeville35
Lanesborough10
Lawrence97214
Lee813
Leeds00
Leicester100
Lenox530
Lenox Dale00
Leominster4084
Lexington14460
Lincoln719
Littleton489
Longmeadow5965
Lowell189120
Ludlow1423
Lunenburg40
Lynn185177
Lynnfield12919
Malden172119
Manchester108
Mansfield2533
Marblehead147115
Marion127
Marlborough7954
Marshfield5657
Marston Mills510
Mashpee1626
Mattapan10958
Mattapoisset3610
Maynard2914
Medfield1821
Medford245234
Medway1115
Melrose11978
Merrimac113
Methuen126243
Middleton94
Milford5630
Millbury3910
Millis55
Milton206104
Monson20
Monument Beach00
Nahant3017
Natick5526
Needham10625
New Bedford170113
Newburyport4435
Newton926429
Norfolk11
North Adams2343
North Andover3849
North Attleboro4630
Northampton3847
Northborough172
Northbridge136
Norton510
Norwell2115
Norwood10859
Orleans/Eastham/Brewster435
Osterville55
Peabody16137
Pembroke2631
Pepperell68
Pittsfield2392
Plainville82
Plymouth822
Pocasset113
Quincy381413
Randolph3252
Raynham125
Reading12052
Revere105105
Rockland5038
Roslindale115123
Rowley168
Roxbury5862
Salem71107
Salisbury1825
Sandwich617
Saugus13577
Scituate3944
Seekonk2012
Sharon2324
Sherborn61
Shrewsbury3412
Somerset9348
Somerville168105
South Boston4750
South Hadley2531
Southborough411
Southbridge6040
Spencer114
Springfield357511
Stockbridge02
Stoneham6137
Stoughton2926
Stow72
Sudbury14625
Sutton92
Swampscott9555
Swansea4839
Taunton6782
Tewksbury6415
Topsfield167
Townsend24
Turners Falls02
Tyngsborough1612
Upton54
Uxbridge62
Wakefield71
Walpole3121
Waltham214117
Wareham824
Warren195
Watertown11792
Wayland10642
Webster5420
Wellesley25697
Wenham53
West Boylston174
West Bridgewater58
West Brookfield264
West Roxbury19099
West Springfield79114
Westborough229
Westford5013
Westminster00
Weston22966
Westport4830
Westwood2613
Weymouth279179
Whitman7919
Wilbraham1616
Williamstown2014
Wilmington199
Winchester9258
Winthrop3237
Woburn9351
Woods Hole27
Worcester662301
Wrentham68
Yarmouth3344