Water Quality in Massachusetts
525 water systems • 330 cities • EPA SDWIS Data
525
Water Systems
10,561
Total Violations
937
Health-Based Violations
10,050,324
Population Served
Overview
Massachusetts ranks 37th among all U.S. states for total drinking water violations, out of 51 states tracked. The state has 10,561 EPA Safe Drinking Water Act violations on record across 525 water systems serving 330 cities. Of those, 937 are health-based violations, meaning a regulated contaminant was measured above the EPA-established safe level. Massachusetts's total violation count is 70% below the national average. Water systems in Massachusetts serve approximately 10,050,324 people. The most frequently cited contaminants in Massachusetts violations include Total Haloacetic Acids (HAA5), Fecal Coliform, Disinfection Byproducts, Chlorine Dioxide, E. coli.
Cities with Most Violations in Massachusetts
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Attleboro | 397 | 2 | 2 | 47,088 |
| 2 | Hudson | 366 | 0 | 1 | 20,032 |
| 3 | Newberry | 298 | 4 | 1 | 150 |
| 4 | Norfolk | 276 | 1 | 1 | 7,602 |
| 5 | Holliston | 231 | 12 | 1 | 15,713 |
| 6 | Nantucket | 200 | 1 | 2 | 30,703 |
| 7 | Auburn | 155 | 2 | 2 | 14,533 |
| 8 | Pepperell | 155 | 2 | 1 | 9,217 |
| 9 | Bernardston | 152 | 2 | 1 | 1,462 |
| 10 | West Boylston | 129 | 0 | 1 | 7,132 |
Largest Cities in Massachusetts
| # | City | Population | Violations | Water Systems |
|---|---|---|---|---|
| 1 | Chelsea | 2,698,319 | 10 | 2 |
| 2 | Boston | 675,937 | 6 | 3 |
| 3 | Worcester | 206,927 | 44 | 6 |
| 4 | Springfield | 168,055 | 120 | 3 |
| 5 | Beverly | 137,791 | 29 | 2 |
| 6 | Cambridge | 118,214 | 78 | 1 |
| 7 | Lowell | 115,150 | 13 | 2 |
| 8 | North Dighton | 112,207 | 51 | 3 |
| 9 | Quincy | 106,000 | 3 | 1 |
| 10 | Brockton | 105,643 | 8 | 1 |
All Cities in Massachusetts
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Chelsea | 2,698,319 | 10 | 7 | Disinfection Byproducts |
| Boston | 675,937 | 6 | 1 | Disinfection Byproducts |
| Worcester | 206,927 | 44 | 3 | Disinfection Byproducts, E. coli, Total Organic Carbon |
| Springfield | 168,055 | 120 | 27 | Total Haloacetic Acids (HAA5) |
| Beverly | 137,791 | 29 | 0 | |
| Cambridge | 118,214 | 78 | 0 | |
| Lowell | 115,150 | 13 | 7 | Disinfection Byproducts |
| North Dighton | 112,207 | 51 | 5 | TTHM |
| Quincy | 106,000 | 3 | 3 | Disinfection Byproducts |
| Brockton | 105,643 | 8 | 5 | TTHM |
| Lynn | 101,253 | 0 | 0 | |
| New Bedford | 101,146 | 3 | 0 | |
| Falmouth | 97,551 | 9 | 6 | Contaminant 1039, Disinfection Byproducts, E. coli +1 more |
| Fall River | 94,000 | 43 | 1 | Disinfection Byproducts |
| Lawrence | 88,877 | 9 | 2 | Disinfection Byproducts |
| Newton | 88,415 | 8 | 4 | Disinfection Byproducts |
| Somerville | 81,045 | 7 | 6 | Disinfection Byproducts |
| Sandwich | 79,250 | 1 | 0 | |
| Framingham | 72,362 | 3 | 3 | Disinfection Byproducts |
| Malden | 66,263 | 10 | 7 | Chlorine, Disinfection Byproducts |
| Waltham | 65,258 | 16 | 5 | Disinfection Byproducts |
| South Dennis | 65,000 | 38 | 0 | |
| Haverhill | 63,235 | 40 | 0 | |
| Brookline | 63,191 | 4 | 4 | Disinfection Byproducts |
| Revere | 62,186 | 7 | 5 | Disinfection Byproducts |
| Taunton | 62,165 | 40 | 0 | |
| Medford | 61,700 | 11 | 8 | Disinfection Byproducts |
| Weymouth | 59,413 | 5 | 1 | Disinfection Byproducts |
| Holbrook | 57,172 | 16 | 2 | Disinfection Byproducts |
| Chicopee | 55,638 | 18 | 1 | Disinfection Byproducts |
| Peabody | 54,481 | 33 | 3 | Disinfection Byproducts |
| Methuen | 53,059 | 3 | 0 | |
| Osterville | 50,000 | 78 | 0 | |
| Everett | 49,075 | 7 | 6 | Chlorine, Disinfection Byproducts |
| Attleboro | 47,088 | 397 | 2 | TTHM |
| Plymouth | 47,016 | 111 | 5 | Disinfection Byproducts |
| Arlington | 46,308 | 7 | 3 | Disinfection Byproducts |
| Hingham | 45,723 | 41 | 0 | |
| Salem | 44,480 | 0 | 0 | |
| Pittsfield | 43,952 | 4 | 1 | Fecal Coliform |
| Billerica | 42,119 | 7 | 7 | Contaminant 1011 |
| Fitchburg | 41,976 | 3 | 1 | Disinfection Byproducts |
| Leominster | 41,808 | 15 | 5 | Disinfection Byproducts, Total Haloacetic Acids (HAA5) |
| Marlborough | 41,799 | 8 | 0 | |
| Dedham | 41,630 | 1 | 1 | TTHM |
| Westfield | 41,594 | 23 | 2 | Disinfection Byproducts, E. coli |
| Woburn | 40,876 | 6 | 3 | Disinfection Byproducts |
| Holyoke | 40,124 | 40 | 0 | |
| Amherst | 39,263 | 6 | 3 | Fecal Coliform |
| Braintree | 39,168 | 9 | 0 | |
| Harwich | 39,144 | 0 | 0 | |
| Milford | 39,091 | 27 | 8 | Disinfection Byproducts, TTHM |
| West Yarmouth | 38,900 | 11 | 2 | E. coli |
| Shrewsbury | 38,457 | 4 | 0 | |
| Gloucester | 37,440 | 2 | 0 | |
| Mattapoisett | 37,285 | 1 | 1 | Gross Alpha |
| Mashpee | 37,034 | 5 | 0 | |
| Natick | 37,006 | 2 | 0 | |
| Andover | 36,569 | 9 | 3 | Disinfection Byproducts |
| Brewster | 36,330 | 77 | 0 | |
| Dracut | 35,409 | 9 | 0 | |
| Middleton | 35,342 | 9 | 0 | |
| Watertown | 35,329 | 5 | 4 | Disinfection Byproducts |
| Hyannis | 35,000 | 4 | 0 | |
| Randolph | 34,362 | 8 | 0 | |
| Lexington | 34,074 | 5 | 4 | Disinfection Byproducts |
| Marshfield | 34,000 | 12 | 2 | E. coli |
| Tewksbury | 33,842 | 13 | 4 | TTHM |
| Rockland | 33,647 | 8 | 5 | E. coli, TTHM |
| Franklin | 33,399 | 2 | 0 | |
| Needham | 33,130 | 3 | 3 | Disinfection Byproducts |
| Wellesley | 32,630 | 7 | 4 | Contaminant 1039, Disinfection Byproducts, E. coli |
| Millbury | 32,579 | 69 | 5 | Chlorine, Disinfection Byproducts, E. coli |
| Chelmsford | 31,550 | 51 | 0 | |
| North Andover | 30,915 | 1 | 0 | |
| Nantucket | 30,703 | 200 | 1 | Disinfection Byproducts |
| Chatham | 30,000 | 1 | 0 | |
| Norwood | 29,909 | 5 | 5 | Disinfection Byproducts |
| Northampton | 29,571 | 5 | 2 | Disinfection Byproducts, Fecal Coliform |
| Melrose | 29,357 | 9 | 9 | Disinfection Byproducts |
| Stoughton | 29,281 | 4 | 1 | Disinfection Byproducts |
| West Springfield | 28,987 | 9 | 0 | |
| North Attleborough | 28,863 | 5 | 0 | |
| Agawam | 28,692 | 18 | 10 | Total Haloacetic Acids (HAA5) |
| Bridgewater | 28,633 | 18 | 0 | |
| Milton | 28,630 | 6 | 5 | Disinfection Byproducts |
| Reading | 27,358 | 7 | 3 | E. coli |
| Belmont | 27,295 | 5 | 4 | Disinfection Byproducts |
| Wakefield | 27,090 | 6 | 5 | Disinfection Byproducts |
| Saugus | 27,082 | 4 | 4 | Disinfection Byproducts |
| Bedford | 26,842 | 29 | 8 | E. coli |
| Burlington | 26,680 | 18 | 0 | |
| Dartmouth | 24,630 | 33 | 22 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Walpole | 24,070 | 2 | 1 | Disinfection Byproducts |
| Oak Bluffs | 24,000 | 4 | 0 | |
| Mansfield | 23,289 | 5 | 0 | |
| Stoneham | 23,244 | 8 | 7 | Disinfection Byproducts, E. coli |
| South Easton | 23,112 | 0 | 0 | |
| Winchester | 22,970 | 2 | 0 | |
| Pocasset | 22,500 | 2 | 0 | |
| Wilmington | 22,481 | 6 | 5 | Disinfection Byproducts, E. coli |
| Canton | 22,453 | 1 | 0 | |
| Provincetown | 22,250 | 1 | 1 | Disinfection Byproducts |
| Westborough | 22,033 | 120 | 2 | E. coli, Gross Alpha |
| Parkwood Beach | 21,418 | 10 | 3 | E. coli |
| Gardner | 21,287 | 3 | 2 | Disinfection Byproducts, Fecal Coliform |
| South Hadley | 21,000 | 1 | 1 | Chlorine |
| Acton | 20,928 | 59 | 1 | E. coli |
| Marblehead | 20,441 | 3 | 3 | Disinfection Byproducts |
| Newburyport | 20,335 | 4 | 2 | Disinfection Byproducts, TTHM |
| Hudson | 20,032 | 366 | 0 | |
| Salisbury | 20,000 | 2 | 0 | |
| Winthrop | 19,316 | 6 | 5 | Disinfection Byproducts |
| Scituate | 19,297 | 44 | 9 | Disinfection Byproducts, E. coli, TTHM |
| Southbridge | 19,180 | 0 | 0 | |
| Norton | 19,161 | 10 | 9 | TTHM |
| Orleans | 18,921 | 76 | 0 | |
| Sudbury | 18,880 | 8 | 0 | |
| Concord | 18,874 | 7 | 5 | Contaminant 1011 |
| Ashland | 18,832 | 5 | 2 | Disinfection Byproducts |
| Westford | 18,776 | 11 | 0 | |
| Foxborough | 18,639 | 4 | 0 | |
| Somerset | 18,303 | 18 | 18 | TTHM |
| Pembroke | 18,251 | 3 | 3 | Gross Alpha |
| Holden | 17,951 | 2 | 1 | Disinfection Byproducts |
| Webster | 17,776 | 12 | 1 | Disinfection Byproducts |
| Greenfield | 17,645 | 4 | 1 | Bromate |
| Swansea | 17,410 | 65 | 20 | Fecal Coliform, TTHM |
| Amesbury | 17,366 | 2 | 0 | |
| Sharon | 16,991 | 1 | 0 | |
| Duxbury | 16,437 | 7 | 0 | |
| Easthampton | 16,211 | 3 | 0 | |
| East Longmeadow | 16,161 | 22 | 12 | TTHM, Total Haloacetic Acids (HAA5) |
| Bellingham | 16,061 | 34 | 23 | TTHM |
| North Reading | 16,054 | 11 | 9 | Disinfection Byproducts, E. coli, TTHM |
| Longmeadow | 15,815 | 41 | 26 | Chlorine, TTHM, Total Haloacetic Acids (HAA5) |
| Holliston | 15,713 | 231 | 12 | TTHM, Total Haloacetic Acids (HAA5) |
| Clinton | 15,530 | 6 | 2 | Disinfection Byproducts, Fecal Coliform |
| Middleborough | 15,518 | 5 | 1 | E. coli |
| Swampscott | 15,175 | 4 | 4 | Disinfection Byproducts |
| Ashburnham | 15,074 | 11 | 1 | Disinfection Byproducts |
| Hanover | 14,984 | 67 | 21 | TTHM |
| Raynham | 14,951 | 0 | 0 | |
| Whitman | 14,837 | 6 | 0 | |
| Kingston | 14,712 | 23 | 4 | E. coli |
| Seekonk | 14,704 | 1 | 1 | Disinfection Byproducts |
| Auburn | 14,533 | 155 | 2 | Barium |
| East Bridgewater | 14,526 | 10 | 1 | Disinfection Byproducts |
| Fairhaven | 14,470 | 4 | 4 | E. coli |
| Northborough | 13,535 | 0 | 0 | |
| Lynnfield | 13,389 | 12 | 3 | Disinfection Byproducts |
| Wayland | 13,196 | 4 | 1 | Disinfection Byproducts |
| North Adams | 13,160 | 43 | 2 | Chlorine, Fecal Coliform |
| Medway | 13,115 | 19 | 1 | Disinfection Byproducts |
| Ipswich | 13,090 | 7 | 1 | Disinfection Byproducts |
| Hopkinton | 13,041 | 13 | 0 | |
| Medfield | 12,894 | 15 | 3 | E. coli |
| Wrentham | 12,792 | 66 | 30 | E. coli, Total Organic Carbon |
| Weston | 11,941 | 6 | 6 | Disinfection Byproducts |
| Uxbridge | 11,525 | 3 | 3 | E. coli |
| Norwell | 11,495 | 4 | 0 | |
| Grafton | 11,389 | 67 | 0 | |
| Southborough | 10,514 | 0 | 0 | |
| Athol | 10,468 | 4 | 0 | |
| Maynard | 10,401 | 30 | 12 | TTHM |
| Ware | 10,131 | 14 | 1 | Disinfection Byproducts |
| Lenox | 10,025 | 6 | 1 | Gross Alpha |
| Rockport | 10,000 | 3 | 2 | Disinfection Byproducts |
| Blackstone | 9,868 | 5 | 1 | Disinfection Byproducts |
| Littleton | 9,611 | 7 | 0 | |
| Hanson | 9,546 | 0 | 0 | |
| Pepperell | 9,217 | 155 | 2 | Disinfection Byproducts |
| Millis | 9,002 | 6 | 0 | |
| Plainville | 8,805 | 26 | 20 | Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5) |
| Georgetown | 8,766 | 28 | 2 | Disinfection Byproducts, TTHM |
| Wilbraham | 8,533 | 4 | 1 | E. coli |
| Ayer | 8,479 | 12 | 0 | |
| Acushnet | 8,469 | 12 | 0 | |
| Bourne | 8,300 | 6 | 0 | |
| Turners Falls | 8,080 | 2 | 0 | |
| Edgartown | 8,027 | 0 | 0 | |
| Whitinsville | 7,983 | 18 | 3 | Fecal Coliform |
| Northbridge | 7,889 | 9 | 0 | |
| West Bridgewater | 7,856 | 3 | 0 | |
| Adams | 7,851 | 0 | 0 | |
| Southwick | 7,646 | 3 | 0 | |
| Norfolk | 7,602 | 276 | 1 | Disinfection Byproducts |
| Williamstown | 7,601 | 4 | 0 | |
| Halifax | 7,593 | 105 | 0 | |
| Cohasset | 7,555 | 83 | 1 | Disinfection Byproducts |
| North Chelmsford | 7,498 | 2 | 0 | |
| Hamilton | 7,377 | 4 | 4 | Disinfection Byproducts, Total Haloacetic Acids (HAA5) |
| Groton | 7,359 | 5 | 0 | |
| Merrimac | 7,193 | 122 | 3 | Disinfection Byproducts |
| Lunenburg | 7,145 | 1 | 0 | |
| West Boylston | 7,132 | 129 | 0 | |
| Spencer | 7,082 | 21 | 1 | Disinfection Byproducts |
| Sterling | 6,754 | 13 | 1 | Disinfection Byproducts |
| Groveland | 6,743 | 1 | 0 | |
| Orange | 6,526 | 0 | 0 | |
| Devens | 6,500 | 4 | 1 | Gross Alpha |
| Townsend | 6,500 | 25 | 0 | |
| Dalton | 6,330 | 1 | 0 | |
| Rowley | 6,283 | 85 | 5 | Disinfection Byproducts |
| Great Barrington | 6,266 | 113 | 13 | Chlorine, Total Haloacetic Acids (HAA5) |
| Eastham | 6,247 | 3 | 0 | |
| Baldwinville | 6,152 | 4 | 0 | |
| Tisbury | 6,082 | 53 | 1 | Gross Alpha |
| Hopedale | 6,017 | 4 | 2 | Fecal Coliform |
| Lancaster | 6,000 | 3 | 1 | Gross Alpha |
| Otis Angb | 6,000 | 4 | 2 | E. coli, Stage 2 DBP |
| Marion | 5,761 | 5 | 3 | E. coli |
| Winchendon | 5,706 | 3 | 2 | Disinfection Byproducts |
| Rutland | 5,675 | 34 | 16 | E. coli, cis-1,2-Dichloroethylene |
| Barnstable | 5,622 | 2 | 1 | Disinfection Byproducts |
| Lincoln | 5,593 | 5 | 2 | Disinfection Byproducts, TTHM |
| Dudley | 5,515 | 7 | 1 | Disinfection Byproducts |
| Lee | 5,463 | 8 | 2 | Disinfection Byproducts, E. coli |
| Topsfield | 5,435 | 7 | 2 | Disinfection Byproducts |
| Onset | 5,392 | 30 | 1 | E. coli |
| Manchester by the Sea | 5,170 | 12 | 3 | Disinfection Byproducts |
| Sturbridge | 4,969 | 8 | 3 | E. coli |
| Cotuit | 4,938 | 3 | 0 | |
| Hadley | 4,871 | 7 | 0 | |
| Southampton | 4,853 | 2 | 1 | Disinfection Byproducts |
| Palmer | 4,837 | 11 | 3 | Fecal Coliform |
| Avon | 4,777 | 4 | 2 | Chlorine Dioxide, Disinfection Byproducts |
| South Deerfield | 4,700 | 26 | 5 | Chlorine, Disinfection Byproducts, E. coli |
| Leicester | 4,700 | 7 | 0 | |
| Tyngsborough | 4,682 | 88 | 4 | Chlorine Dioxide, Disinfection Byproducts |
| Sagamore Beach | 4,668 | 0 | 0 | |
| Upton | 4,420 | 129 | 0 | |
| Douglas | 4,400 | 0 | 0 | |
| Paxton | 4,300 | 1 | 0 | |
| Monson | 4,212 | 0 | 0 | |
| Barre | 4,212 | 65 | 1 | Disinfection Byproducts |
| Shirley | 4,121 | 13 | 0 | |
| Westminster | 3,992 | 25 | 9 | Disinfection Byproducts, TTHM |
| Wenham | 3,942 | 2 | 1 | Disinfection Byproducts |
| North Brookfield | 3,903 | 8 | 2 | Disinfection Byproducts |
| Belchertown | 3,835 | 25 | 4 | Chlorine Dioxide, E. coli |
| Boylston | 3,723 | 35 | 3 | Disinfection Byproducts, E. coli |
| Rochdale | 3,696 | 48 | 48 | E. coli, Fecal Coliform, TTHM |
| Essex | 3,675 | 1 | 0 | |
| Nahant | 3,334 | 9 | 4 | Disinfection Byproducts |
| Sunderland | 3,278 | 13 | 0 | |
| South Grafton | 3,262 | 10 | 0 | |
| Three Rivers | 3,258 | 4 | 0 | |
| Hatfield | 3,183 | 6 | 0 | |
| West Newbury | 3,080 | 3 | 0 | |
| El Paso | 3,067 | 1 | 0 | |
| Stockbridge | 2,850 | 11 | 1 | Fecal Coliform |
| Sutton | 2,798 | 4 | 0 | |
| West Brookfield | 2,527 | 36 | 20 | Disinfection Byproducts |
| Warren | 2,447 | 14 | 1 | Disinfection Byproducts |
| Wareham | 2,380 | 5 | 0 | |
| Lanesborough | 2,349 | 8 | 2 | Chlorine Dioxide, Gross Alpha |
| Carver | 2,274 | 87 | 5 | Disinfection Byproducts, Selenium, Stage 2 DBP |
| Byfield | 2,228 | 4 | 0 | |
| Huntington | 2,180 | 9 | 0 | |
| Hinsdale | 1,940 | 29 | 2 | Chlorine, Disinfection Byproducts |
| Shelburne Falls | 1,806 | 0 | 0 | |
| Harvard | 1,758 | 23 | 1 | Gross Alpha |
| Deerfield | 1,650 | 1 | 0 | |
| Assonet | 1,600 | 4 | 0 | |
| Haydenville | 1,575 | 11 | 0 | |
| East Brookfield | 1,526 | 11 | 0 | |
| Brookfield | 1,479 | 14 | 0 | |
| Bernardston | 1,462 | 152 | 2 | Disinfection Byproducts |
| Northfield | 1,459 | 38 | 1 | Disinfection Byproducts |
| Thorndike | 1,435 | 0 | 0 | |
| Bondsville | 1,429 | 0 | 0 | |
| Cheshire | 1,407 | 2 | 0 | |
| Russell | 1,228 | 9 | 2 | Gross Alpha |
| Gilbertville | 1,169 | 8 | 3 | Disinfection Byproducts, E. coli |
| South Egremont | 1,000 | 4 | 1 | Chlorine |
| Hancock | 1,000 | 4 | 0 | |
| Bridgeport | 987 | 1 | 0 | |
| Boxborough | 963 | 38 | 0 | |
| West Warren | 927 | 4 | 1 | Disinfection Byproducts |
| Wellfleet | 915 | 11 | 1 | E. coli |
| Portland | 900 | 0 | 0 | |
| Chilmark | 841 | 25 | 0 | |
| Chester | 750 | 66 | 12 | Bromate, TTHM |
| Mount Hermon | 750 | 1 | 0 | |
| Stow | 675 | 17 | 1 | Disinfection Byproducts |
| Worthington | 565 | 0 | 0 | |
| Erving | 561 | 1 | 0 | |
| West Stockbridge | 535 | 3 | 0 | |
| Granby | 522 | 11 | 0 | |
| Mendon | 501 | 14 | 0 | |
| Spring Valley | 500 | 3 | 0 | |
| Nashua | 477 | 125 | 0 | |
| Manchaug | 476 | 4 | 0 | |
| Montague | 450 | 3 | 2 | Disinfection Byproducts |
| Blandford | 442 | 30 | 0 | |
| Sheffield | 425 | 4 | 0 | |
| Gosnold | 425 | 3 | 0 | |
| Cummington | 420 | 5 | 0 | |
| Ashfield | 400 | 7 | 1 | Disinfection Byproducts |
| Westport | 400 | 9 | 2 | Gross Alpha |
| Berlin | 360 | 23 | 2 | Chlorine Dioxide, Contaminant 1039 |
| Lakeville | 350 | 2 | 0 | |
| Gill | 341 | 4 | 0 | |
| Dunstable | 337 | 10 | 0 | |
| Wheelwright | 300 | 4 | 1 | Disinfection Byproducts |
| Hardwick | 300 | 4 | 1 | Chlorine Dioxide |
| Rehoboth | 300 | 6 | 2 | E. coli |
| Hampden | 284 | 47 | 0 | |
| Royalston | 275 | 15 | 0 | |
| Monterey | 242 | 10 | 0 | |
| Dover | 232 | 13 | 2 | Disinfection Byproducts, E. coli |
| Colrain | 225 | 10 | 0 | |
| South Yarmouth | 200 | 7 | 0 | |
| Summerland | 180 | 1 | 0 | |
| Clarksburg | 180 | 3 | 1 | Chlorine |
| Hockessin | 150 | 5 | 0 | |
| Mill River | 150 | 20 | 8 | Chlorine, Chlorine Dioxide |
| Newberry | 150 | 298 | 4 | Chlorine, E. coli, Stage 2 DBP |
| Cherry Valley | 140 | 15 | 0 | |
| Bolton | 135 | 3 | 0 | |
| Oxford | 133 | 37 | 3 | Chlorine Dioxide, E. coli |
| Boxford | 133 | 85 | 0 | |
| Exeter | 132 | 2 | 0 | |
| East Deerfield | 120 | 11 | 0 | |
| Leeds | 120 | 5 | 0 | |
| South Wellfleet | 120 | 12 | 0 | |
| West Tisbury | 116 | 2 | 0 | |
| Sandisfield | 100 | 0 | 0 | |
| Cordaville | 100 | 2 | 0 |
Water Quality in Other States
Alabama 13,972 violations Alaska 73,527 violations Arizona 60,414 violations Arkansas 17,031 violations California 39,276 violations Colorado 42,596 violations Connecticut 28,800 violations Delaware 1,242 violations District of Columbia 115 violations Florida 36,335 violations Georgia 32,159 violations Hawaii 182 violations Idaho 26,078 violations Illinois 30,544 violations Indiana 18,261 violations Iowa 9,389 violations Kansas 19,480 violations Kentucky 9,427 violations Louisiana 32,039 violations Maine 6,830 violations Maryland 5,321 violations Michigan 15,820 violations Minnesota 3,784 violations Mississippi 25,296 violations Missouri 25,377 violations Montana 20,202 violations Nebraska 5,134 violations Nevada 8,167 violations New Hampshire 6,968 violations New Jersey 19,332 violations New Mexico 37,115 violations New York 93,834 violations North Carolina 54,399 violations North Dakota 8,431 violations Ohio 61,604 violations Oklahoma 128,472 violations Oregon 0 violations Pennsylvania 199,265 violations Rhode Island 0 violations South Carolina 13,045 violations South Dakota 19,565 violations Tennessee 20,607 violations Texas 263,180 violations Utah 71,655 violations Vermont 12,362 violations Virginia 15,298 violations Washington 54,459 violations West Virginia 81,622 violations Wisconsin 18,533 violations Wyoming 13,783 violations
Data Sources
Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.