88 Massachusetts water districts with results read from their own annual water quality report or EPA testing, largest first.
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- Boston Water and Sewer Commission (Mwra)675,647 people · 9 results
- Worcester Dpwp, Water Supply Division206,518 people · 23 results
- Springfield Water and Sewer Commission167,954 people · 11 results · 1 over a limit
- Cambridge Water Department118,214 people · 12 results
- Quincy Water Dept. (Mwra)106,000 people · 11 results
- Brockton Water Department105,643 people · 10 results
- Newton Water Dept. (Mwra)88,415 people · 9 results
- Somerville Water Dept. (Mwra)81,045 people · 9 results
- Framingham Water Dept. (Mwra)72,362 people · 9 results
- Malden Water Division (Mwra)66,263 people · 9 results
- Waltham Water Department65,218 people · 9 results
- Haverhill Water Dept63,235 people · 8 results
- Brookline Water and Sewer Division63,191 people · 9 results
- Revere Water Division (Mwra)62,186 people · 9 results
- Medford Water Dept. (Mwra)61,700 people · 9 results
- Peabody Water Dept.54,481 people · 9 results
- Methuen Water Dept53,059 people · 10 results
- Everett Water Dept. (Mwra)49,075 people · 9 results
- Attleboro Water Dept46,654 people · 11 results
- Arlington Water Dept. (Mwra)46,308 people · 9 results
- Fitchburg Dpw Division of Water Supply41,946 people · 11 results
- Marlborough Dpw Water Div. (Mwra)41,799 people · 9 results
- Leominster Water Division41,683 people · 9 results
- Dedham Westwood Water Dist.41,630 people · 15 results
- Woburn Water Dept.40,876 people · 9 results
- Harwich Water Department39,144 people · 8 results
- Yarmouth Water Department38,900 people · 11 results
- Chelsea Water Dept. (Mwra)38,319 people · 9 results
- Natick Water and Sewer Division37,006 people · 13 results
- Andover Water Dept36,569 people · 13 results
- Watertown Water Dept. (Mwra)35,329 people · 9 results
- Hyannis Water System, Town of Barnstable35,000 people · 8 results
- Lexington Water Dept. (Mwra)34,074 people · 9 results
- Franklin Water Department33,399 people · 12 results
- Needham Water Dept33,130 people · 9 results
- Tewksbury Water Department31,342 people · 14 results
- Milford Water Department30,379 people · 15 results
- Chatham Water Department30,000 people · 12 results
- Norwood Water Dept. (Mwra)29,909 people · 9 results
- Northampton Water Division29,571 people · 15 results
- Melrose Water Division (Mwra)29,357 people · 9 results
- Stoughton Water Department29,281 people · 11 results
- North Attleboro Water Dept28,863 people · 12 results
- Chelmsford Water District28,750 people · 19 results
- Bridgewater Water Department28,633 people · 16 results
- Milton Water Dept. (Mwra)28,630 people · 9 results
- Danvers Water Dept.28,087 people · 14 results
- Wannacomet Water Company27,703 people · 6 results
- Reading Water Department (Mwra)27,358 people · 9 results
- Belmont Water Dept. (Mwra)27,295 people · 9 results
- Wakefield Water Dept27,090 people · 9 results
- Saugus Water Dept. (Mwra)27,082 people · 9 results
- Burlington Water Dept26,680 people · 9 results
- Walpole Water Dept24,070 people · 25 results
- Stoneham Water Dept (Mwra Supply)23,244 people · 9 results
- Winchester Water Dept22,970 people · 9 results
- Wilmington Water Dept22,481 people · 9 results
- Canton Water Dept22,453 people · 9 results
- Gardner Water Department21,287 people · 18 results
- Acton Water Supply District20,780 people · 21 results
- Marblehead Water Dept. (Mwra)20,441 people · 9 results
- Newburyport Water Department20,335 people · 16 results
- Hudson Water Supply20,032 people · 12 results
- Salisbury Water Division20,000 people · 10 results
- Winthrop Water Division, (Mwra)19,316 people · 9 results
- Ashland Water and Sewer Dept.18,832 people · 14 results
- Concord Water Dept18,788 people · 25 results
- Westford Water Department18,680 people · 21 results
- Sudbury Water District18,416 people · 16 results
- Somerset Water Department18,303 people · 15 results
- Holden Water Division, Dpw17,951 people · 13 results
- Webster Water Department17,776 people · 20 results
- Amesbury Dpw Water Div.17,366 people · 12 results · 1 over a limit
- Sharon Water Dept16,991 people · 20 results
- Duxbury Water Department16,387 people · 11 results
- Easthampton Water Dept16,211 people · 14 results
- East Longmeadow Dpw Water Dept16,161 people · 6 results
- Bellingham Dpw Water Sewer Division16,061 people · 19 results
- North Reading Water Dept.16,054 people · 10 results
- Swampscott Water Dept. (Mwra)15,175 people · 9 results
- Bedford Water Dept.14,394 people · 9 results
- Northborough Water Department (Mwra)13,535 people · 9 results
- Ipswich Dpu Water Dept13,090 people · 5 results
- Medfield Water Dept.12,894 people · 10 results
- Weston Water Dept.11,941 people · 9 results
- Southborough Dpw Water Division (Mwra)10,514 people · 9 results
- Lynnfield Water Dist. (Mwra)4,820 people · 9 results
- Nahant Water Dept. (Mwra)3,334 people · 9 results
Other districts with a few results read
Search these in the water lookup to see their numbers.
- Oak Bluffs Water District · 24,000 people