Massachusetts water loss
281 systems, 1,913 filed years. Measured against MassDEP's published standards of 10% unaccounted-for water and 65 gallons per capita per day.
- Median loss, FY2024
- 12.0% Half of Massachusetts's systems are above this. The 90th percentile is 27.0%.
- Over 10% every year
- 68 MassDEP's standard is 10% unaccounted-for water. A standing condition rather than one bad year. Filter to these.
- Flagged for review
- 66 Mean absolute change per year in the filed loss percentage, above the seventy-fifth percentile for Massachusetts. A flag on the series, not a judgment on the utility: a real operational change, a meter replacement program and a reporting error all land here. Filter to these.
See these systems on a map — each service area shaded by the loss figure it filed.
Which of these systems border each other — and what the filed figures say across each border.
Sort by any column. The cohorts above are filters, not separate lists. This table carries every system in a cohort, plus the 100 with the largest annual cost — 134 of 281. The rest are listed under every system, and every system's own page carries its full filed history.
| System | Loss (FY2024) | vs state | Years over 10% | Movement/yr |
|---|---|---|---|---|
| Hinsdale | 69.0% | 100% | 6 of 6 | 18.2 pts 17%→56% FY2022 |
| Cheshire | 58.0% | 99% | 6 of 6 | 9.2 pts 18%→43% FY2022 |
| Winchendon | 58.0% | 99% | 6 of 6 | 12.8 pts 32%→58% FY2024 |
| Lee | 46.0% | 99% | 3 of 6 | 9 pts 10%→28% FY2022 |
| Barre | 45.0% | 99% | 6 of 6 | 11 pts 14%→36% FY2020 |
| Grafton Water District | 42.0% | 98% | 6 of 6 | 8.8 pts 32%→21% FY2020 |
| Shrewsbury | 38.0% | 97% | 6 of 6 | 3.8 pts 26%→32% FY2022 |
| Westborough | 38.0% | 97% | 6 of 6 | 6.6 pts 26%→38% FY2024 |
| Rockport Water Treatment Plant | 37.0% | 97% | 6 of 6 | 9 pts 12%→28% FY2023 |
| Bernardston Fire & Water District | 35.0% | 97% | 6 of 6 | 7.8 pts 37%→54% FY2022 |
| Ashburnham | 34.0% | 96% | 6 of 6 | 5 pts 35%→24% FY2021 |
| Fall River | 34.0% | 96% | 6 of 6 | 7.6 pts 35%→17% FY2023 |
| North Brookfield | 34.0% | 96% | 6 of 6 | 6 pts 12%→27% FY2023 |
| Palmer | 33.0% | 94% | 5 of 5 | 14 pts 52%→20% FY2022 |
| Merrimac | 32.0% | 95% | 3 of 6 | 8.8 pts 9%→32% FY2024 |
| Gloucester DPW - Water Supply | 31.0% | 95% | 6 of 6 | 7.8 pts 28%→13% FY2020 |
| Salem DPW | 31.0% | 95% | 6 of 6 | 5.8 pts 17%→32% FY2021 |
| Brockton DPW | 29.0% | 93% | 5 of 5 | 12 pts 50%→29% FY2024 |
| Kingston | 29.0% | 93% | 4 of 6 | 4.6 pts 10%→19% FY2022 |
| Lynn Water & Sewer Commission | 29.0% | 93% | 6 of 6 | 4 pts 33%→38% FY2022 |
| Warren Water District | 29.0% | 93% | 4 of 6 | 14.4 pts 34%→8% FY2022 |
| Beverly | 28.0% | 91% | 6 of 6 | 6 pts 12%→21% FY2023 |
| Canton | 28.0% | 91% | 6 of 6 | 3.2 pts 17%→23% FY2021 |
| East Brookfield | 28.0% | 91% | 2 of 3 | 15.5 pts 7%→28% FY2024 |
| Elm Hill Water District | 28.0% | 91% | 6 of 6 | 4.6 pts 18%→31% FY2023 |
| Topsfield | 28.0% | 91% | 6 of 6 | 4.4 pts 22%→16% FY2020 |
| Clinton | 27.0% | 90% | 5 of 6 | 4.8 pts 13%→27% FY2023 |
| Peabody | 27.0% | 90% | 5 of 6 | 16.2 pts 4%→39% FY2020 |
| Rutland | 27.0% | 90% | 5 of 5 | 3.9 pts 14%→25% FY2021 |
| Holliston | 26.0% | 88% | 6 of 6 | 5.8 pts 29%→15% FY2020 |
| Lincoln | 26.0% | 88% | 5 of 6 | 8.4 pts 8%→26% FY2021 |
| Medford | 26.0% | 88% | 5 of 5 | 1.9 pts 22%→27% FY2021 |
| Medway | 26.0% | 88% | 2 of 6 | 5.2 pts 9%→26% FY2024 |
| Milton | 26.0% | 88% | 6 of 6 | 2.8 pts 22%→26% FY2024 |
| Webster DPW | 26.0% | 88% | 6 of 6 | 2.4 pts 18%→27% FY2020 |
| Westfield | 26.0% | 88% | 5 of 5 | 4.3 pts 21%→13% FY2020 |
| Paxton | 25.0% | 87% | 6 of 6 | 3.4 pts 23%→30% FY2023 |
| Provincetown | 25.0% | 87% | 6 of 6 | 4 pts 19%→25% FY2024 |
| Sterling | 25.0% | 87% | 3 of 6 | 12.6 pts 1%→25% FY2021 |
| Fitchburg | 24.0% | 85% | 6 of 6 | 1.8 pts 27%→24% FY2020 |
| North Reading | 24.0% | 85% | 6 of 6 | 7 pts 17%→37% FY2023 |
| Salisbury Water Company | 24.0% | 85% | 5 of 6 | 7.8 pts 4%→24% FY2024 |
| Waltham | 24.0% | 85% | 6 of 6 | 4.2 pts 31%→22% FY2023 |
| Weymouth Department Of | 24.0% | 85% | 6 of 6 | 3.2 pts 20%→24% FY2020 |
| Wrentham DPW | 24.0% | 85% | 4 of 6 | 7.8 pts 20%→3% FY2021 |
| Hatfield | 23.0% | 82% | 3 of 6 | 8.4 pts 9%→23% FY2024 |
| Littleton | 23.0% | 82% | 6 of 6 | 4.2 pts 12%→23% FY2024 |
| Medfield | 23.0% | 82% | 5 of 6 | 7 pts 10%→20% FY2020 |
| North Adams | 23.0% | 82% | 5 of 6 | 5.4 pts 10%→23% FY2024 |
| Shirley Water District | 23.0% | 82% | 6 of 6 | 6 pts 21%→33% FY2021 |
| Winchester | 23.0% | 82% | 2 of 6 | 3.4 pts 13%→23% FY2024 |
| Worcester DPW | 23.0% | 82% | 5 of 6 | 4 pts 9%→20% FY2021 |
| Holyoke | 22.0% | 79% | 6 of 6 | 5.6 pts 28%→38% FY2021 |
| Malden DPW | 22.0% | 79% | 5 of 5 | 2.8 pts 29%→21% FY2023 |
| Melrose | 22.0% | 79% | 6 of 6 | 3.6 pts 15%→20% FY2021 |
| Quincy | 22.0% | 79% | 6 of 6 | 2.2 pts 21%→17% FY2021 |
| Rowley | 22.0% | 79% | 6 of 6 | 4.2 pts 19%→27% FY2023 |
| Southwick | 22.0% | 79% | 2 of 6 | 6 pts 13%→22% FY2024 |
| Swampscott | 22.0% | 79% | 6 of 6 | 4.2 pts 21%→30% FY2022 |
| Aquarion Water Company: Oxford | 21.0% | 77% | 4 of 6 | 8.2 pts 19%→4% FY2022 |
| Attleboro | 21.0% | 77% | 2 of 6 | 5.2 pts 10%→21% FY2024 |
| Manchester | 21.0% | 77% | 5 of 6 | 8.2 pts 31%→9% FY2022 |
| Tewksbury DPW | 21.0% | 77% | 4 of 6 | 15.6 pts 22%→0% FY2022 |
| Upton Department Of | 21.0% | 77% | 5 of 6 | 9 pts 12%→29% FY2023 |
| Watertown | 21.0% | 77% | 6 of 6 | 2.8 pts 14%→21% FY2024 |
| Ashland | 20.0% | 76% | 4 of 6 | 4.4 pts 7%→16% FY2021 |
| Saugus | 20.0% | 76% | 6 of 6 | 7.2 pts 24%→12% FY2021 |
| South Grafton Water District | 20.0% | 76% | 6 of 6 | 2.8 pts 15%→23% FY2021 |
| Turners Falls Fire District | 20.0% | 76% | 6 of 6 | 4.4 pts 11%→22% FY2022 |
| Dudley | 19.0% | 73% | 6 of 6 | 10.6 pts 30%→14% FY2020 |
| Hudson | 19.0% | 73% | 5 of 6 | 3 pts 8%→13% FY2020 |
| Nahant | 19.0% | 73% | 6 of 6 | 6.6 pts 24%→36% FY2021 |
| Shelburne Falls Fire District | 19.0% | 73% | 6 of 6 | 3.4 pts 15%→21% FY2023 |
| Somerset | 19.0% | 73% | 6 of 6 | 5.4 pts 17%→28% FY2021 |
| Southborough DPW | 19.0% | 73% | 6 of 6 | 9.2 pts 19%→37% FY2023 |
| Stoneham | 19.0% | 73% | 5 of 6 | 4.4 pts 9%→20% FY2021 |
| Wakefield | 19.0% | 73% | 4 of 5 | 3.8 pts 16%→10% FY2021 |
| Aquarion Water Company: Hingham | 18.0% | 71% | 6 of 6 | 4.2 pts 26%→19% FY2023 |
| Dover Water Company Inc | 18.0% | 71% | 5 of 6 | 7.2 pts 3%→18% FY2024 |
| East Chelmsford Water District | 18.0% | 71% | 5 of 6 | 7.2 pts 4%→18% FY2020 |
| Hopkinton | 18.0% | 71% | 5 of 6 | 8.6 pts 27%→3% FY2022 |
| South Deerfield Water District | 18.0% | 71% | 1 of 6 | 4.8 pts 8%→18% FY2024 |
| Walpole | 18.0% | 71% | 5 of 6 | 4.6 pts 11%→20% FY2021 |
| Dedham Westwood Water District | 17.0% | 67% | 6 of 6 | 3.8 pts 22%→15% FY2022 |
| Essex DPW | 17.0% | 67% | 6 of 6 | 3 pts 18%→11% FY2020 |
| Everett | 17.0% | 67% | 5 of 6 | 4.2 pts 9%→17% FY2024 |
| Lynnfield Center Water District | 17.0% | 67% | 3 of 6 | 4.2 pts 9%→17% FY2022 |
| Mansfield | 17.0% | 67% | 2 of 6 | 8.2 pts 23%→6% FY2022 |
| Marshfield | 17.0% | 67% | 6 of 6 | 3.4 pts 13%→21% FY2022 |
| Newton | 17.0% | 67% | 6 of 6 | 2.2 pts 24%→17% FY2024 |
| Springfield | 17.0% | 67% | 6 of 6 | 1.8 pts 14%→19% FY2020 |
| Stoughton DPW | 17.0% | 67% | 1 of 6 | 5 pts 5%→17% FY2024 |
| Winthrop Water Division | 17.0% | 67% | 5 of 5 | 2.6 pts 28%→21% FY2021 |
| Bedford | 16.0% | 64% | 4 of 6 | 6.4 pts 16%→4% FY2020 |
| Buzzards Bay Water District | 16.0% | 64% | 3 of 6 | 2.6 pts 17%→10% FY2020 |
| Dracut Water Supply District | 16.0% | 64% | 5 of 6 | 5.4 pts 23%→10% FY2023 |
| Eastham | 16.0% | 64% | 1 of 1 | |
| Milford Water Company | 16.0% | 64% | 6 of 6 | 1.2 pts 16%→14% FY2020 |
| North Andover | 16.0% | 64% | 5 of 6 | 2.6 pts 9%→15% FY2022 |
| Somerville | 16.0% | 64% | 4 of 6 | 6.2 pts 5%→16% FY2022 |
| Uxbridge | 16.0% | 64% | 6 of 6 | 2.4 pts 13%→19% FY2022 |
| Braintree | 15.0% | 61% | 6 of 6 | 4 pts 26%→20% FY2022 |
| Lynnfield Water Dist. | 15.0% | 61% | 6 of 6 | 7.2 pts 11%→30% FY2021 |
| Wenham | 15.0% | 61% | 5 of 6 | 6.2 pts 24%→11% FY2021 |
| Aquarion Water Company: Millbury | 14.0% | 58% | 4 of 6 | 7.6 pts 23%→6% FY2022 |
| Arlington | 14.0% | 58% | 6 of 6 | 4.8 pts 24%→14% FY2020 |
| Dartmouth | 13.0% | 54% | 3 of 6 | 9.4 pts 2%→18% FY2022 |
| Easthampton | 13.0% | 54% | 6 of 6 | 4.4 pts 15%→22% FY2020 |
| Onset Fire District | 13.0% | 54% | 3 of 5 | 26.1 pts 10%→57% FY2020 |
| Andover | 12.0% | 49% | 6 of 6 | 1 pts 14%→12% FY2021 |
| East Northfield Water Company | 12.0% | 49% | 6 of 6 | 11 pts 47%→29% FY2020 |
| Falmouth | 12.0% | 49% | 4 of 6 | 6.8 pts 19%→8% FY2021 |
| Greenfield | 12.0% | 49% | 6 of 6 | 7.4 pts 27%→11% FY2023 |
| Hopedale | 12.0% | 49% | 3 of 6 | 9.8 pts 30%→12% FY2024 |
| Russell | 12.0% | 49% | 6 of 6 | 20 pts 56%→12% FY2024 |
| Lexington | 11.0% | 45% | 4 of 4 | 0.8 pts 13%→11% FY2022 |
| Newburyport | 11.0% | 45% | 3 of 5 | 7.1 pts 1%→14% FY2020 |
| Weston | 11.0% | 45% | 3 of 6 | 9.8 pts 16%→2% FY2020 |
| Williamstown | 11.0% | 45% | 4 of 6 | 6.6 pts 22%→9% FY2022 |
| Thorndike Fire & Water District | 9.0% | 32% | 1 of 6 | 8.4 pts 37%→9% FY2020 |
| Billerica | 8.0% | 27% | 3 of 6 | 9.6 pts 28%→10% FY2021 |
| Athol | 7.0% | 19% | 2 of 6 | 7.4 pts 28%→13% FY2020 |
| Bridgewater | 7.0% | 19% | 3 of 6 | 6.2 pts 2%→14% FY2020 |
| Lowell Water Treatment Facility | 7.0% | 19% | 2 of 5 | 9.5 pts 6%→26% FY2023 |
| Westminister | 7.0% | 19% | 5 of 6 | 8 pts 24%→7% FY2024 |
| Templeton | 6.0% | 14% | 1 of 6 | 7.2 pts 3%→16% FY2023 |
| Georgetown | 4.0% | 8% | 2 of 6 | 6.2 pts 19%→4% FY2024 |
| Williamsburg | 4.0% | 8% | 1 of 6 | 6.4 pts 8%→17% FY2022 |
| Blackstone | 2.0% | 3% | 1 of 6 | 11.6 pts 34%→4% FY2023 |
| Wayland | 2.0% | 3% | 4 of 6 | 13 pts 37%→2% FY2024 |
| Foxborough | 1.0% | 1% | 4 of 6 | 8.2 pts 34%→15% FY2022 |
| Freetown Water Commission | 1.0% | 1% | 3 of 6 | 9.2 pts 40%→15% FY2021 |
| Adams Fire District | 0%* | 0% | 4 of 6 | 8.8 pts 34%→15% FY2020 |
| Huntington | 0%* | 0% | 4 of 5 | 9 pts 22%→0% FY2024 |
Every system
Names and links only. Each system's own page carries the archived cell every figure was read from, its retrieval date and its citation line; the county pages carry the same figures a few dozen at a time. A figure quoted from an index without that page is a figure without its basis.
- County not stated Abington & Rockland Jt, Acton Water District, Acushnet, Adams Fire District, Agawam, Amesbury, Amherst DPW, Andover, Aquarion Water Company: Hingham, Aquarion Water Company: Millbury, Aquarion Water Company: Oxford, Arlington, Ashburnham, Ashland, Athol, Attleboro, Auburn Water District, Avon, Ayer DPW, Barnstable Fire District, Barre, Bedford, Belchertown Water District, Bellingham DPW, Belmont, Bernardston Fire & Water District, Beverly, Billerica, Blackstone, Bondsville Fire And Water District, Boston Water & Sewer Commission, Bourne Water District, Boylston Water District, Braintree, Brewster, Bridgewater, Brockton DPW, Brookfield, Brookline, Burlington, Buzzards Bay Water District, Byfield Water District, Cambridge, Canton, Centerville Osterville, Chatham, Chelmsford Water District, Chelsea, Cherry Valley & Rochdale Water District, Cheshire, Chicopee, Clinton, Cohasset, Concord, Cotuit Fire District, Danvers, Dartmouth, Dedham Westwood Water District, Deerfield Fire District, Dennis Water District, Devens Commerce Center, Dighton Water District, Douglas, Dover Water Company Inc, Dracut Water Supply District, Dudley, Duxbury, East Brgewater, East Brookfield, East Chelmsford Water District, East Longmeadow DPW, East Northfield Water Company, Eastham, Easthampton, Easton, Edgartown, Elm Hill Water District, Essex DPW, Everett, Fairhaven, Fall River, Falmouth, Fitchburg, Foxborough, Framingham, Franklin DPW, Freetown Water Commission, Gardner, Georgetown, Gloucester DPW - Water Supply, Grafton Water District, Great Barrington Fire District, Greenfield, Groton, Groveland, Hadley, Halifax, Hamilton, Hanover, Hanson, Harwich, Hatfield, Haverhill DPW, Hinsdale, Holbrook, Holden, Holliston, Holyoke, Hopedale, Hopkinton, Housatonic Water Works Company, Hudson, Huntington, Hyannis, Ipswich, Kenwood Water District, Kingston, Lancaster, Lawrence, Lee, Leicester Water Supply District, Lenox, Leominster DPW, Lexington, Lincoln, Littleton, Longmeadow, Lowell Water Treatment Facility, Lunenburg Water District, Lynn Water & Sewer Commission, Lynnfield Center Water District, Lynnfield Water Dist., Malden DPW, Manchester, Mansfield, Marblehead, Marion, Marlborough DPW, Marshfield, Mashpee Water District, Mattapoisett, Maynard Department Of, Medfield, Medford, Medway, Melrose, Merrimac, Methuen, Midddleborough Water Supply, Middleton, Milford Water Company, Millis, Milton, Monson, Nahant, Natick Department Of, Needham Department Of, New Bedford, Newburyport, Newton, Norfolk, North Adams, North Andover, North Attleboro, North Brookfield, North Chelmsford Water District, North Raynham Water District, North Reading, North Sagamore Water District, Northampton Department Of, Northborough, Northbrige, Norton, Norwell, Norwood, Oak Bluffs Water District, Onset Fire District, Orange, Orleans, Palmer, Paxton, Peabody, Pembroke, Pepperell, Pine Hills Llc, Plainville, Plymouth DPW, Plymouth Water Co, Provincetown, Quincy, Randolph, Raynham Center Water District, Reading DPW, Revere, Rockport Water Treatment Plant, Rowley, Russell, Rutland, Salem DPW, Salisbury Water Company, Sandwich Water District, Saugus, Scituate DPW, Seekonk Water District, Sharon, Sheffield Water Company, Shelburne Falls Fire District, Shirley Water District, Shrewsbury, Siasconset, Somerset, Somerville, South Deerfield Water District, South Grafton Water District, South Hadley Fd #1, South Hadley Fire District 2, Southampton, Southborough DPW, Southbridge, Southwick, Spencer, Springfield, Sterling, Stockbridge, Stoneham, Stoughton DPW, Sturbrige, Sudbury Water District, Sunderland Water District, Swampscott, Swansea Water District, Taunton, Templeton, Tewksbury DPW, Thorndike Fire & Water District, Three Rivers Fire District, Tisbury, Topsfield, Townsend, Turners Falls Fire District, Tyngsboro Water District, Upton Department Of, Uxbridge, Wakefield, Walpole, Waltham, Wannacomet Water Company, Ware, Wareham Fire District, Warren Water District, Watertown, Wayland, Webster DPW, Wellesley, Wenham, West Boylston Water District, West Brgewater, West Brookfield, West Groton Water District, West Newbury, West Springfield, Westborough, Westfield, Westford, Westminister, Weston, Weymouth Department Of, Whitinsville Water Company, Whitman, Wilbraham, Wilkinsonville Water District, Williamsburg, Williamstown, Wilmington, Winchendon, Winchester, Winthrop Water Division, Woburn Department, Worcester DPW, Wrentham DPW, Yarmouth
Source: MassDEP Drinking Water Program, as filed by each utility. States differ in what they publish, so these pages differ in what they can show: MassDEP publishes these two figures as percentages rather than volumes, so no dollar amount is derivable — the comparisons here are to the rest of the state and to the system's own record. Report a correction.
What the state requires, and of whom: The Massachusetts performance standards: what is reported, and against what.