Largest water suppliers
Lead is the LCR 90th-percentile result; a value above 0.015 mg/L exceeds the
EPA action level. “—” means no lead sample is on file for that supplier.
| Supplier | City | Population | Lead (p90) |
|---|---|---|---|
| Mwra | Boston | 2,580,000 | 0.0059 mg/L |
| Boston Water and Sewer Commission (Mwra) | Boston | 675,647 | 0.0058 mg/L |
| Worcester Dpwp, Water Supply Division | Worcester | 206,518 | 0.0020 mg/L |
| Springfield Water and Sewer Commission | Springfield | 169,170 | 0.0035 mg/L |
| Lowell Regional Water Utility | Lowell | 120,418 | 0.0000 mg/L |
| Cambridge Water Department | Cambridge | 118,214 | 0.0080 mg/L |
| Quincy Water Dept. (Mwra) | Quincy | 106,000 | 0.0087 mg/L |
| Brockton Water Department | Brockton | 105,788 | 0.0040 mg/L |
| Inima Usa / Aquaria Llc | Dighton | 105,643 | — |
| Lynn Water and Sewer Comm | Lynn | 101,253 | 0.0024 mg/L |
| City of New Bedford Dpi | New Bedford | 101,079 | 0.0041 mg/L |
| Falmouth Water Dept | Falmouth | 97,551 | 0.0011 mg/L |
| Fall River Water Department | Fall River | 94,000 | 0.0120 mg/L |
| Salem and Beverly Water Supply Board | Beverly | 90,330 | 0.0017 mg/L |
| Lawrence Water Works | Lawrence | 89,143 | 0.0000 mg/L |
| Newton Water Dept. (Mwra) | Newton | 88,931 | 0.0013 mg/L |
| Somerville Water Dept. (Mwra) | Somerville | 81,045 | 0.0039 mg/L |
| Framingham Water Dept. (Mwra) | Framingham | 72,362 | 0.0016 mg/L |
| Malden Water Division (Mwra) | Malden | 66,263 | 0.0097 mg/L |
| Waltham Water Department | Waltham | 65,218 | 0.0019 mg/L |
| Dennis Water District | Dennis | 65,000 | 0.0000 mg/L |
| Brookline Water and Sewer Division | Brookline | 63,191 | 0.0013 mg/L |
| Revere Water Division (Mwra) | Revere | 62,186 | 0.0080 mg/L |
| Taunton Water Division | Taunton | 62,165 | 0.0018 mg/L |
| Medford Water Dept. (Mwra) | Medford | 61,700 | 0.0083 mg/L |
| Haverhill Water Dept | Haverhill | 61,277 | 0.0000 mg/L |
| Weymouth Water Department | Weymouth | 57,871 | 0.0010 mg/L |
| Upper Cape Regional Water Cooperative | Sandwich | 56,250 | — |
| Chicopee Water Dept (Mwra) | Chicopee | 55,560 | 0.0015 mg/L |
| Peabody Water Dept. | Peabody | 54,481 | 0.0042 mg/L |
| Methuen Water Dept | Methuen | 53,059 | 0.0016 mg/L |
| Centerville Osterville Marstons Mills Wd | Barnstable | 50,000 | 0.0024 mg/L |
| Everett Water Dept. (Mwra) | Everett | 49,075 | 0.0057 mg/L |
| Beverly Water Dept | Beverly | 47,461 | 0.0130 mg/L |
| Plymouth Water Department | Plymouth | 47,100 | 0.0025 mg/L |
| Randolph/Holbrook Joint Water Board | Randolph | 46,519 | — |
| Attleboro Water Dept | Attleboro | 46,461 | 0.0013 mg/L |
| Arlington Water Dept. (Mwra) | Arlington | 46,308 | 0.0028 mg/L |
| Weir River Water System | Hingham | 45,339 | 0.0010 mg/L |
| Salem Water Department | Salem | 44,480 | 0.0030 mg/L |
| Pittsfield Dpu Water Dept | Pittsfield | 43,927 | 0.0017 mg/L |
| Billerica Water Works | Billerica | 42,119 | 0.0024 mg/L |
| Fitchburg Dpw Division of Water Supply | Fitchburg | 41,946 | 0.0050 mg/L |
| Marlborough Dpw Water Div. (Mwra) | Marlborough | 41,799 | 0.0033 mg/L |
| Leominster Water Division | Leominster | 41,683 | 0.0028 mg/L |
| Dedham Westwood Water Dist. | Dedham | 41,630 | 0.0020 mg/L |
| Westfield Dpwwater Division | Westfield | 41,094 | 0.0027 mg/L |
| Woburn Water Dept. | Woburn | 40,876 | 0.0013 mg/L |
| Chelsea Water Dept. (Mwra) | Chelsea | 40,787 | 0.0024 mg/L |
| Amherst Dpw Water Division | Amherst | 39,263 | 0.0080 mg/L |
| Harwich Water Department | Harwich | 39,144 | 0.0000 mg/L |
| Braintree Water and Sewer Dept. | Braintree | 39,143 | 0.0048 mg/L |
| Yarmouth Water Department | Yarmouth | 38,900 | 0.0015 mg/L |
| Shrewsbury Water Department | Shrewsbury | 38,325 | 0.0000 mg/L |
| Holyoke Water Works | Holyoke | 37,838 | 0.0090 mg/L |
| Gloucester Public Utility Division | Gloucester | 37,440 | 0.0030 mg/L |
| Natick Water and Sewer Division | Natick | 37,006 | 0.0000 mg/L |
| Mashpee Water District | Mashpee | 36,922 | 0.0014 mg/L |
| Andover Water Dept | Andover | 36,569 | 0.0000 mg/L |
| Watertown Department of Public Works | Watertown | 35,985 | 0.0011 mg/L |
| Randolph Water Department | Randolph | 35,114 | 0.0030 mg/L |
| Hyannis Water System, Town of Barnstable | Barnstable | 35,000 | 0.0000 mg/L |
| Brewster Water Department | Brewster | 35,000 | 0.0034 mg/L |
| Lexington Water Dept. (Mwra) | Lexington | 34,074 | 0.0018 mg/L |
| Marshfield Water Department | Marshfield | 34,000 | 0.0040 mg/L |
| Franklin Water Department | Franklin | 33,706 | 0.0020 mg/L |
| Abington/Rockland Joint Wtr. Works | Abington | 33,387 | 0.0040 mg/L |
| Needham Water Dept | Needham | 31,664 | 0.0050 mg/L |
| North Attleboro Water Dept | North Attleborough | 31,410 | 0.0051 mg/L |
| Tewksbury Water Department | Tewksbury | 31,342 | 0.0010 mg/L |
| North Andover Water Dept | North Andover | 30,915 | 0.0072 mg/L |
| Milford Water Department | Milford | 30,379 | 0.0030 mg/L |
| Chatham Water Department | Chatham | 30,000 | 0.0011 mg/L |
| Melrose Water Division (Mwra) | Melrose | 29,938 | 0.0102 mg/L |
| Norwood Water Dept. (Mwra) | Norwood | 29,909 | 0.0050 mg/L |
| Mattapoisett River Valley W.D. | Mattapoisett | 29,600 | — |
| Northampton Water Division | Northampton | 29,571 | 0.0026 mg/L |
| Wellesley Water Division | Wellesley | 29,550 | 0.0035 mg/L |
| Stoughton Water Department | Stoughton | 29,281 | 0.0030 mg/L |
| West Springfield Dpw Water Division | West Springfield | 28,835 | 0.0016 mg/L |
| Chelmsford Water District | Chelmsford | 28,750 | 0.0024 mg/L |
| Agawam Water Department | Agawam | 28,692 | 0.0015 mg/L |
| Bridgewater Water Department | Bridgewater | 28,633 | 0.0030 mg/L |
| Milton Water Dept. (Mwra) | Milton | 28,630 | 0.0077 mg/L |
| Danvers Water Dept. | Danvers | 28,087 | 0.0047 mg/L |
| Saugus Water Dept. (Mwra) | Saugus | 27,844 | 0.0014 mg/L |
| Wannacomet Water Company | Nantucket | 27,703 | 0.0020 mg/L |
| Belmont Water Dept. (Mwra) | Belmont | 27,442 | 0.0015 mg/L |
| Wakefield Water Dept | Wakefield | 27,090 | 0.0015 mg/L |
| Reading Water Department (Mwra) | Reading | 26,262 | 0.0084 mg/L |
| Burlington Water Dept | Burlington | 25,864 | 0.0022 mg/L |
| Dracut Water Supply District | Dracut | 25,808 | 0.0000 mg/L |
| Easton Water Div | Easton | 25,058 | 0.0010 mg/L |
| Dartmouth Water Division | Dartmouth | 24,696 | 0.0070 mg/L |
| Walpole Water Dept | Walpole | 24,070 | 0.0018 mg/L |
| Oak Bluffs Water District | Oak Bluffs | 24,000 | 0.0039 mg/L |
| Stoneham Water Dept (Mwra Supply) | Stoneham | 23,244 | 0.0014 mg/L |
| Sandwich Water District | Sandwich | 23,000 | 0.0000 mg/L |
| Winchester Water Dept | Winchester | 22,970 | 0.0042 mg/L |
| Canton Water Dept | Canton | 22,766 | 0.0014 mg/L |