Massachusetts PFAS compliance
PFAS contamination data for 500 water systems in Massachusetts, serving 10,777,224 people.
Total systems
500
Exceed MCL
105
At risk
2
Compliant
155
Settlement eligible
147
Massachusetts PFAS regulatory overview
State standards
State standardsMassachusetts has its own PFAS standards
PFOA MCL: 20 ppt(EPA: 4 ppt)
PFOS MCL: 20 ppt(EPA: 4 ppt)
MA MCL: 20 ppt for sum of 6 PFAS (PFOA, PFOS, PFHxS, PFNA, PFHpA, PFDA). One of the first states to regulate PFAS as a group.
Regulatory agency
Massachusetts regulates 6 PFAS as a group sum (MassDEP Method 537.1). Among the earliest state-level PFAS regulations. Extensive contamination near military bases and airports.
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Water systems
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| BOSTON WATER AND SEWER COMMISSION (MWRA) MA3035000 | BOSTON | 675,647 | — | — | Compliant |
| WORCESTER DPWP, WATER SUPPLY DIVISION MA2348000 | WORCESTER | 206,518 | — | — | Compliant |
| SPRINGFIELD WATER AND SEWER COMMISSION MA1281000 | SPRINGFIELD | 167,954 | — | — | Compliant |
| CAMBRIDGE WATER DEPARTMENT MA3049000 | CAMBRIDGE | 118,214 | 4.8 | — | Exceeds |
| LOWELL REGIONAL WATER UTILITY MA3160000 | LOWELL | 115,000 | 4.6 | — | Exceeds |
| QUINCY WATER DEPT. (MWRA) MA3243000 | QUINCY | 106,000 | — | — | Compliant |
| BROCKTON WATER DEPARTMENT MA4044000 | BROCKTON | 105,643 | — | — | Compliant |
| INIMA USA / AQUARIA LLC MA4076004 | NORTH DIGHTON | 105,643 | — | — | Compliant |
| LYNN WATER AND SEWER COMM MA3163000 | LYNN | 101,253 | 4.7 | — | Exceeds |
| CITY OF NEW BEDFORD DPI MA4201000 | NEW BEDFORD | 101,079 | — | — | Compliant |
| FALMOUTH WATER DEPT MA4096000 | FALMOUTH | 97,551 | — | — | Compliant |
| FALL RIVER WATER DEPARTMENT MA4095000 | FALL RIVER | 94,000 | — | — | Compliant |
| LAWRENCE WATER WORKS MA3149000 | LAWRENCE | 88,877 | — | — | Compliant |
| NEWTON WATER DEPT. (MWRA) MA3207000 | NEWTON | 88,415 | — | — | Compliant |
| SOMERVILLE WATER DEPT. (MWRA) MA3274000 | SOMERVILLE | 81,045 | — | — | Compliant |
| FRAMINGHAM WATER DEPT. (MWRA) MA3100000 | FRAMINGHAM | 72,362 | — | — | Compliant |
| MALDEN WATER DIVISION (MWRA) MA3165000 | MALDEN | 66,263 | — | — | Compliant |
| WALTHAM WATER DEPARTMENT MA3308000 | WALTHAM | 65,218 | — | — | Compliant |
| DENNIS WATER DISTRICT MA4075000 | SOUTH DENNIS | 65,000 | — | — | Compliant |
| HAVERHILL WATER DEPT MA3128000 | HAVERHILL | 63,235 | — | — | Compliant |
| BROOKLINE WATER AND SEWER DIVISION MA3046000 | BROOKLINE | 63,191 | — | — | Compliant |
| REVERE WATER DIVISION (MWRA) MA3248000 | REVERE | 62,186 | — | — | Compliant |
| TAUNTON WATER DIVISION MA4293000 | TAUNTON | 62,165 | — | — | Compliant |
| MEDFORD WATER DEPT. (MWRA) MA3176000 | MEDFORD | 61,700 | — | — | Compliant |
| WEYMOUTH WATER DEPARTMENT MA4336000 | WEYMOUTH | 57,613 | — | — | Compliant |
| UPPER CAPE REGIONAL WATER COOPERATIVE MA4261024 | SANDWICH | 56,250 | — | — | Compliant |
| CHICOPEE WATER DEPT (MWRA) MA1061000 | CHICOPEE | 55,560 | — | — | Compliant |
| PEABODY WATER DEPT. MA3229000 | PEABODY | 54,481 | 7 | — | Exceeds |
| METHUEN WATER DEPT MA3181000 | METHUEN | 53,059 | 4 | — | At risk |
| CENTERVILLE OSTERVILLE MARSTONS MILLS WD MA4020002 | OSTERVILLE | 50,000 | 4.9 | — | Exceeds |
| EVERETT WATER DEPT. (MWRA) MA3093000 | EVERETT | 49,075 | — | — | Compliant |
| BEVERLY WATER DEPT MA3030000 | BEVERLY | 47,461 | — | — | Compliant |
| PLYMOUTH WATER DEPARTMENT MA4239000 | PLYMOUTH | 46,799 | — | — | Compliant |
| ATTLEBORO WATER DEPT MA4016000 | ATTLEBORO | 46,654 | 6.6 | 12 | Exceeds |
| ARLINGTON WATER DEPT. (MWRA) MA3010000 | ARLINGTON | 46,308 | — | — | Compliant |
| WEIR RIVER WATER SYSTEM MA4131000 | HINGHAM | 45,339 | 6.4 | — | Exceeds |
| SALEM WATER DEPARTMENT MA3258000 | SALEM | 44,480 | — | — | Compliant |
| PITTSFIELD DPU WATER DEPT MA1236000 | PITTSFIELD | 43,927 | — | — | Compliant |
| BILLERICA WATER WORKS MA3031000 | BILLERICA | 42,119 | 5.5 | — | Exceeds |
| FITCHBURG DPW DIVISION OF WATER SUPPLY MA2097000 | FITCHBURG | 41,946 | 4.9 | — | Exceeds |
| MARLBOROUGH DPW WATER DIV. (MWRA) MA2170000 | MARLBOROUGH | 41,799 | — | — | Compliant |
| LEOMINSTER WATER DIVISION MA2153000 | LEOMINSTER | 41,683 | 4.3 | — | Exceeds |
| DEDHAM WESTWOOD WATER DIST. MA3073000 | DEDHAM | 41,630 | 6.5 | 5.1 | Exceeds |
| WESTFIELD DPWWATER DIVISION MA1329000 | WESTFIELD | 41,094 | — | — | Compliant |
| WOBURN WATER DEPT. MA3347000 | WOBURN | 40,876 | 8.4 | 6.9 | Exceeds |
| HOLYOKE WATER WORKS MA1137000 | HOLYOKE | 40,124 | — | — | Compliant |
| AMHERST DPW WATER DIVISION MA1008000 | AMHERST | 39,263 | — | — | Compliant |
| HARWICH WATER DEPARTMENT MA4126000 | HARWICH | 39,144 | — | — | Compliant |
| BRAINTREE WATER AND SEWER DEPT. MA4040000 | BRAINTREE | 39,143 | 5.3 | 8.5 | Exceeds |
| YARMOUTH WATER DEPARTMENT MA4351000 | WEST YARMOUTH | 38,900 | — | — | Compliant |
| SHREWSBURY WATER DEPARTMENT MA2271000 | SHREWSBURY | 38,325 | 5.4 | 5.6 | Exceeds |
| CHELSEA WATER DEPT. (MWRA) MA3057000 | CHELSEA | 38,319 | — | — | Compliant |
| GLOUCESTER PUBLIC UTILITY DIVISION MA3107000 | GLOUCESTER | 37,440 | — | — | Compliant |
| NATICK WATER AND SEWER DIVISION MA3198000 | NATICK | 37,006 | 14.3 | 37.3 | Exceeds |
| MASHPEE WATER DISTRICT MA4172039 | MASHPEE | 36,922 | — | — | Compliant |
| ANDOVER WATER DEPT MA3009000 | ANDOVER | 36,569 | — | — | Compliant |
| WATERTOWN WATER DEPT. (MWRA) MA3314000 | WATERTOWN | 35,329 | — | — | Compliant |
| BREWSTER WATER DEPARTMENT MA4041000 | BREWSTER | 35,000 | — | — | Compliant |
| HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE MA4020004 | HYANNIS | 35,000 | — | — | Compliant |
| RANDOLPH WATER DEPARTMENT MA4244000 | RANDOLPH | 34,362 | 7.3 | 13 | Exceeds |
| LEXINGTON WATER DEPT. (MWRA) MA3155000 | LEXINGTON | 34,074 | — | — | Compliant |
| MARSHFIELD WATER DEPARTMENT MA4171000 | MARSHFIELD | 34,000 | 7 | 4.6 | Exceeds |
| ABINGTON/ROCKLAND JOINT WTR. WORKS MA4001000 | ROCKLAND | 33,647 | 12 | 7 | Exceeds |
| FRANKLIN WATER DEPARTMENT MA2101000 | FRANKLIN | 33,399 | 4.7 | 5.6 | Exceeds |
| NEEDHAM WATER DEPT MA3199000 | NEEDHAM | 33,130 | 4.6 | 5 | Exceeds |
| TEWKSBURY WATER DEPARTMENT MA3295000 | TEWKSBURY | 31,342 | 5 | — | Exceeds |
| NORTH ANDOVER WATER DEPT MA3210000 | NORTH ANDOVER | 30,915 | — | — | Compliant |
| MILFORD WATER DEPARTMENT MA2185000 | MILFORD | 30,379 | 7.1 | 6.6 | Exceeds |
| CHATHAM WATER DEPARTMENT MA4055000 | CHATHAM | 30,000 | — | — | Compliant |
| NORWOOD WATER DEPT. (MWRA) MA4220000 | NORWOOD | 29,909 | — | — | Compliant |
| MATTAPOISETT RIVER VALLEY W.D. MA4173001 | MATTAPOISETT | 29,600 | — | — | Compliant |
| NORTHAMPTON WATER DIVISION MA1214000 | NORTHAMPTON | 29,571 | — | — | Compliant |
| WELLESLEY WATER DIVISION MA3317000 | WELLESLEY | 29,550 | 6.3 | 6.6 | Exceeds |
| MELROSE WATER DIVISION (MWRA) MA3178000 | MELROSE | 29,357 | — | — | Compliant |
| STOUGHTON WATER DEPARTMENT MA4285000 | STOUGHTON | 29,281 | 7.3 | 6.3 | Exceeds |
| NORTH ATTLEBORO WATER DEPT MA4211000 | NORTH ATTLEBOROUGH | 28,863 | 9 | 8 | Exceeds |
| WEST SPRINGFIELD DPW WATER DIVISION MA1325000 | WEST SPRINGFIELD | 28,835 | — | — | Compliant |
| CHELMSFORD WATER DISTRICT MA3056000 | CHELMSFORD | 28,750 | 8.9 | 7.2 | Exceeds |
| AGAWAM WATER DEPARTMENT MA1005000 | AGAWAM | 28,692 | — | — | Compliant |
| BRIDGEWATER WATER DEPARTMENT MA4042000 | BRIDGEWATER | 28,633 | 9 | 7 | Exceeds |
| MILTON WATER DEPT. (MWRA) MA3189000 | MILTON | 28,630 | — | — | Compliant |
| DANVERS WATER DEPT. MA3071000 | MIDDLETON | 28,087 | — | 5.2 | Exceeds |
| WANNACOMET WATER COMPANY MA4197000 | NANTUCKET | 27,703 | — | — | Compliant |
| READING WATER DEPARTMENT (MWRA) MA3246000 | READING | 27,358 | — | — | Compliant |
| BELMONT WATER DEPT. (MWRA) MA3026000 | BELMONT | 27,295 | — | — | Compliant |
| WAKEFIELD WATER DEPT MA3305000 | WAKEFIELD | 27,090 | 6.9 | — | Exceeds |
| SAUGUS WATER DEPT. (MWRA) MA3262000 | SAUGUS | 27,082 | — | — | Compliant |
| BURLINGTON WATER DEPT MA3048000 | BURLINGTON | 26,680 | — | — | Compliant |
| DRACUT WATER SUPPLY DISTRICT MA3079000 | DRACUT | 25,789 | 6.1 | — | Exceeds |
| DARTMOUTH WATER DIVISION MA4072000 | DARTMOUTH | 24,630 | 4.2 | 50.6 | Exceeds |
| WALPOLE WATER DEPT MA4307000 | WALPOLE | 24,070 | 4 | 4 | At risk |
| OAK BLUFFS WATER DISTRICT MA4221000 | OAK BLUFFS | 24,000 | — | — | Compliant |
| MANSFIELD WATER DIVISION MA4167000 | MANSFIELD | 23,289 | 4.3 | 6.2 | Exceeds |
| STONEHAM WATER DEPT (MWRA SUPPLY) MA3284000 | STONEHAM | 23,244 | — | — | Compliant |
| EASTON WATER DIV MA4088000 | SOUTH EASTON | 23,112 | 9.9 | 16.3 | Exceeds |
| SANDWICH WATER DISTRICT MA4261000 | SANDWICH | 23,000 | — | — | Compliant |
| WINCHESTER WATER DEPT MA3344000 | WINCHESTER | 22,970 | — | — | Compliant |
| BOURNE WATER DISTRICT MA4036000 | POCASSET | 22,500 | — | 4.8 | Exceeds |
| WILMINGTON WATER DEPT MA3342000 | WILMINGTON | 22,481 | — | — | Compliant |
| CANTON WATER DEPT MA4050000 | CANTON | 22,453 | 5 | — | Exceeds |
| PROVINCETOWN WATER DEPARTMENT MA4242000 | PROVINCETOWN | 22,250 | — | — | Compliant |
| WESTBOROUGH WATER DEPARTMENT MA2328000 | WESTBOROUGH | 21,567 | 5.8 | 7.5 | Exceeds |
| WAREHAM FIRE DISTRICT MA4310000 | PARKWOOD BEACH | 21,418 | — | — | Compliant |
| GARDNER WATER DEPARTMENT MA2103000 | GARDNER | 21,287 | — | — | Compliant |
| ACTON WATER SUPPLY DISTRICT MA2002000 | ACTON | 20,780 | 13.4 | 4.9 | Exceeds |
| MARBLEHEAD WATER DEPT. (MWRA) MA3168000 | MARBLEHEAD | 20,441 | — | — | Compliant |
| NEWBURYPORT WATER DEPARTMENT MA3206000 | NEWBURYPORT | 20,335 | — | 4.6 | Exceeds |
| HUDSON WATER SUPPLY MA2141000 | HUDSON | 20,032 | — | — | Compliant |
| SALISBURY WATER DIVISION MA3259000 | SALISBURY | 20,000 | 6 | — | Exceeds |
| WINTHROP WATER DIVISION, (MWRA) MA3346000 | WINTHROP | 19,316 | — | — | Compliant |
| SCITUATE WATER DIVISION MA4264000 | SCITUATE | 19,297 | 5.6 | 5.7 | Exceeds |
| SOUTHBRIDGE WATER DEPARTMENT MA2278000 | SOUTHBRIDGE | 19,180 | — | — | Compliant |
| NORTON WATER DEPARTMENT MA4218000 | NORTON | 19,161 | 8.8 | 4 | Exceeds |
| ORLEANS WATER DEPARTMENT MA4224000 | ORLEANS | 18,921 | — | — | Compliant |
| ASHLAND WATER AND SEWER DEPT. MA3014000 | ASHLAND | 18,832 | — | — | Compliant |
| CONCORD WATER DEPT MA3067000 | CONCORD | 18,788 | 6 | — | Exceeds |
| WESTFORD WATER DEPARTMENT MA3330000 | WESTFORD | 18,680 | 8.6 | 4.4 | Exceeds |
| FOXBORO WATER DEPARTMENT MA4099000 | FOXBOROUGH | 18,639 | 6.3 | 6.7 | Exceeds |
| SUDBURY WATER DISTRICT MA3288000 | SUDBURY | 18,416 | 9 | — | Exceeds |
| SOMERSET WATER DEPARTMENT MA4273000 | SOMERSET | 18,303 | — | — | Compliant |
| PEMBROKE WATER DIVISION DPW MA4231000 | PEMBROKE | 18,251 | — | — | Compliant |
| HOLDEN WATER DIVISION, DPW MA2134000 | HOLDEN | 17,951 | 4.9 | — | Exceeds |
| WEBSTER WATER DEPARTMENT MA2316000 | WEBSTER | 17,776 | 4.4 | — | Exceeds |
| GREENFIELD WATER DEPARTMENT MA1114000 | GREENFIELD | 17,645 | — | — | Compliant |
| SWANSEA WATER DISTRICT MA4292000 | SWANSEA | 17,375 | 5.1 | — | Exceeds |
| AMESBURY DPW WATER DIV. MA3007000 | AMESBURY | 17,366 | — | — | Compliant |
| SHARON WATER DEPT MA4266000 | SHARON | 16,991 | 8.1 | 15 | Exceeds |
| DUXBURY WATER DEPARTMENT MA4082000 | DUXBURY | 16,387 | 7.5 | 35 | Exceeds |
| EASTHAMPTON WATER DEPT MA1087000 | EASTHAMPTON | 16,211 | — | — | Compliant |
| EAST LONGMEADOW DPW WATER DEPT MA1085000 | EAST LONGMEADOW | 16,161 | — | — | Compliant |
| BELLINGHAM DPW WATER SEWER DIVISION MA2025000 | BELLINGHAM | 16,061 | 4.3 | 5 | Exceeds |
| NORTH READING WATER DEPT. MA3213000 | NORTH READING | 16,054 | — | — | Compliant |
| LONGMEADOW WATER DEPT MA1159000 | LONGMEADOW | 15,815 | — | — | Compliant |
| HOLLISTON WATER DEPARTMENT MA2136000 | HOLLISTON | 15,713 | 5.3 | 6.5 | Exceeds |
| CLINTON WATER DEPT MA2064000 | CLINTON | 15,530 | — | — | Compliant |
| MIDDLEBOROUGH WATER SUPPLY MA4182000 | MIDDLEBOROUGH | 15,350 | 11 | 5 | Exceeds |
| SWAMPSCOTT WATER DEPT. (MWRA) MA3291000 | SWAMPSCOTT | 15,175 | — | — | Compliant |
| HANOVER WATER DEPT MA4122000 | HANOVER | 14,984 | 8.9 | 11.4 | Exceeds |
| WHITMAN WATER SYSTEM MA4338000 | WHITMAN | 14,837 | — | — | Compliant |
| SOUTH HADLEY FD #1 (MWRA) MA1275000 | SOUTH HADLEY | 14,800 | — | — | Compliant |
| KINGSTON WATER DEPARTMENT MA4145000 | KINGSTON | 14,712 | — | — | Compliant |
| SEEKONK WATER DISTRICT MA4265000 | SEEKONK | 14,704 | — | 5 | Exceeds |
| EAST BRIDGEWATER WATER DEPT MA4083000 | EAST BRIDGEWATER | 14,526 | 5.1 | — | Exceeds |
| FAIRHAVEN WATER DEPT MA4094000 | FAIRHAVEN | 14,470 | — | — | Compliant |
| BEDFORD WATER DEPT. MA3023000 | BEDFORD | 14,394 | — | — | Compliant |
| NORTHBOROUGH WATER DEPARTMENT (MWRA) MA2215000 | NORTHBOROUGH | 13,535 | — | — | Compliant |
| WAYLAND WATER DEPARTMENT MA3315000 | WAYLAND | 13,196 | 9 | 4 | Exceeds |
| MEDWAY WATER DEPARTMENT MA2177000 | MEDWAY | 13,115 | 7.2 | — | Exceeds |
| IPSWICH DPU WATER DEPT MA3144000 | IPSWICH | 13,090 | 7.3 | — | Exceeds |
| NORTH ADAMS WATER DEPT MA1209000 | NORTH ADAMS | 13,000 | 5.9 | — | Exceeds |
| MEDFIELD WATER DEPT. MA2175000 | MEDFIELD | 12,894 | 7 | 6.7 | Exceeds |
| HOPKINTON WATER DEPARTMENT MA2139000 | HOPKINTON | 12,586 | 7.2 | — | Exceeds |
| AUBURN WATER DISTRICT MA2017000 | AUBURN | 12,255 | 5.7 | 4.7 | Exceeds |
| WESTON WATER DEPT. MA3333000 | WESTON | 11,941 | — | — | Compliant |
| WRENTHAM WATER DIVISION MA4350000 | WRENTHAM | 11,795 | 5.7 | 4.4 | Exceeds |
| HANSCOM AFB MA3023002 | BEDFORD | 11,789 | — | — | Compliant |
| UXBRIDGE DPW, WATER DIVISION MA2304000 | UXBRIDGE | 11,525 | — | 6.7 | Exceeds |
| NORWELL WATER DEPARTMENT MA4219000 | NORWELL | 11,495 | 9.9 | 18.4 | Exceeds |
| HOLBROOK PUBLIC WORKS DEPT MA4133000 | HOLBROOK | 11,405 | 7 | 11.9 | Exceeds |
| ASH/WIN JOINT WATER AUTHORITY MA2011004 | ASHBURNHAM | 11,394 | — | — | Compliant |
| AQUARION WATER COMPANY, MILLBURY MA2186000 | MILLBURY | 11,326 | 15.8 | 6.2 | Exceeds |
| GRAFTON WATER DISTRICT MA2110000 | GRAFTON | 10,925 | 6.9 | 6.9 | Exceeds |
| RAYNHAM CENTER WATER DISTRICT MA4245000 | RAYNHAM | 10,824 | 92 | — | Exceeds |
| SOUTHBOROUGH DPW WATER DIVISION (MWRA) MA2277000 | SOUTHBOROUGH | 10,514 | — | — | Compliant |
| ATHOL DPW WATER DIVISION MA1015000 | ATHOL | 10,418 | — | — | Compliant |
| MAYNARD DPW, WATER DIVISION MA2174000 | MAYNARD | 10,401 | 7.1 | 4.2 | Exceeds |
| WARE WATER DEPT MA1309000 | WARE | 10,066 | 4.9 | 7.1 | Exceeds |
| ROCKPORT WATER DEPT MA3252000 | ROCKPORT | 10,000 | — | — | Compliant |
| BLACKSTONE WATER DEPARTMENT MA2032000 | BLACKSTONE | 9,868 | 5.7 | — | Exceeds |
| LENOX DPW WATER DIVISION MA1152000 | LENOX | 9,800 | — | — | Compliant |
| KENWOOD WATER DISTRICT MA3079001 | DRACUT | 9,620 | 6.3 | — | Exceeds |
| LITTLETON WATER DEPARTMENT MA2158000 | LITTLETON | 9,611 | — | — | Compliant |
| HANSON WATER DEPARTMENT MA4123000 | HANSON | 9,546 | 5.6 | 4 | Exceeds |
| PEPPERELL DPW WATER DIVISION MA2232000 | PEPPERELL | 9,217 | 11.4 | 10 | Exceeds |
| AQUARION WATER COMPANY, PINEHILLS MA4239055 | MILLBURY | 9,195 | — | — | Compliant |
| MILLIS WATER DEPT MA2187000 | MILLIS | 9,002 | 6.9 | 7.3 | Exceeds |
| PLAINVILLE WATER DEPARTMENT MA4238000 | PLAINVILLE | 8,805 | 4.3 | 5.9 | Exceeds |
| GEORGETOWN WATER DEPARTMENT MA3105000 | GEORGETOWN | 8,766 | — | — | Compliant |
| LYNNFIELD CENTER WATER DISTRICT MA3164000 | LYNNFIELD | 8,569 | 6.1 | — | Exceeds |
| WILBRAHAM WATER DEPT (MWRA) MA1339000 | WILBRAHAM | 8,533 | — | — | Compliant |
| AYER DPW WATER DIVISION MA2019000 | AYER | 8,479 | — | — | Compliant |
| ACUSHNET WATER DEPARTMENT MA4003000 | ACUSHNET | 8,384 | — | — | Compliant |
| TURNERS FALLS WATER DEPT MA1192000 | TURNERS FALLS | 8,080 | — | — | Compliant |
| BROWN UNIVERSITY HEALTH-RI HOSPITAL RI2980469 | NEWTON | 8,040 | — | — | Compliant |
| EDGARTOWN WATER DEPARTMENT MA4089000 | EDGARTOWN | 8,027 | — | — | Compliant |
| WHITINSVILLE WATER COMPANY MA2216000 | WHITINSVILLE | 7,933 | — | — | Compliant |
| NORTHBRIDGE WATER DIVISION MA2216006 | NORTHBRIDGE | 7,889 | — | — | Compliant |
| WEST BRIDGEWATER WATER DEPT MA4322000 | WEST BRIDGEWATER | 7,856 | 5.5 | — | Exceeds |
| ADAMS FIRE DISTRICT MA1004000 | ADAMS | 7,851 | — | — | Compliant |
| BUZZARDS BAY WATER DISTRICT MA4036001 | BOURNE | 7,700 | — | — | Compliant |
| MATTAPOISETT WATER DEPARTMENT MA4173000 | MATTAPOISETT | 7,685 | — | — | Compliant |
| SOUTHWICK WATER DEPT MA1279000 | SOUTHWICK | 7,646 | — | — | Compliant |
| NORFOLK WATER DIVISION MA2208000 | NORFOLK | 7,602 | 7 | 4.5 | Exceeds |
| COHASSET WATER DEPT MA4065000 | COHASSET | 7,555 | 6.7 | 4.5 | Exceeds |
| HALIFAX WATER DEPARTMENT MA4118000 | HALIFAX | 7,553 | 5.7 | — | Exceeds |
| NORTH CHELMSFORD WATER DIST MA3056002 | NORTH CHELMSFORD | 7,498 | — | — | Compliant |
| HAMILTON WATER DEPT MA3119000 | HAMILTON | 7,377 | 11.1 | 11.2 | Exceeds |
| AQUARION WATER COMPANY OXFORD MA2226000 | MILLBURY | 7,343 | — | — | Compliant |
| WILLIAMSTOWN WATER DEPT MA1341000 | WILLIAMSTOWN | 7,326 | — | — | Compliant |
| MIDDLETON WATER DEPT. MA3184000 | MIDDLETON | 7,255 | 4.5 | — | Exceeds |
| MERRIMAC WATER DEPARTMENT MA3180000 | MERRIMAC | 7,193 | 6.9 | — | Exceeds |
| LUNENBURG WATER DISTRICT MA2162000 | LUNENBURG | 7,145 | 5.1 | — | Exceeds |
| WEST BOYLSTON WATER DISTRICT MA2321000 | WEST BOYLSTON | 7,132 | 5.4 | — | Exceeds |
| SPENCER WATER DEPARTMENT MA2280000 | SPENCER | 7,037 | — | — | Compliant |
| STERLING WATER DEPARTMENT MA2282000 | STERLING | 6,754 | — | 5.2 | Exceeds |
| GROVELAND WATER DEPARTMENT MA3116000 | GROVELAND | 6,743 | 6.3 | — | Exceeds |
| ORANGE WATER DEPT MA1223000 | ORANGE | 6,526 | — | — | Compliant |
| DEVENS MASSDEVELOPMENT MA2019001 | DEVENS | 6,500 | — | — | Compliant |
| TOWNSEND WATER DEPARTMENT MA2299000 | TOWNSEND | 6,500 | 6.5 | — | Exceeds |
| DALTON FIRE DISTRICT MA1070000 | DALTON | 6,330 | — | — | Compliant |
| ROWLEY WATER DEPARTMENT MA3254000 | ROWLEY | 6,283 | 7.7 | 5.7 | Exceeds |
| SOUTH HADLEY FIRE DISTRICT #2 WATER DEPT MA1275001 | SOUTH HADLEY | 6,200 | — | — | Compliant |
| TOWN OF EASTHAM MA4086095 | EASTHAM | 6,199 | — | — | Compliant |
| TEMPLETON MUNIC. LIGHT AND WATER PLANT MA2294000 | BALDWINVILLE | 6,152 | 5.2 | — | Exceeds |
| TISBURY WATER WORKS MA4296000 | TISBURY | 6,082 | — | — | Compliant |
| HOPEDALE WATER DEPARTMENT MA2138000 | HOPEDALE | 6,017 | 6.8 | 4.3 | Exceeds |
| OTIS AIR NATIONAL GUARD BASE MA4096001 | OTIS ANGB | 6,000 | — | — | Compliant |
| LANCASTER WATER DEPARTMENT MA2147000 | LANCASTER | 6,000 | — | — | Compliant |
| MARION WATER DIVISION MA4169000 | MARION | 5,761 | — | — | Compliant |
| WINCHENDON WATER DEPARTMENT MA2343000 | WINCHENDON | 5,706 | — | — | Compliant |
| RUTLAND WATER DEPARTMENT MA2257000 | RUTLAND | 5,605 | — | — | Compliant |
| LINCOLN WATER DEPT MA3157000 | LINCOLN | 5,593 | 6.4 | 5.4 | Exceeds |
| DUDLEY WATER DEPARTMENT MA2080000 | DUDLEY | 5,515 | — | — | Compliant |
| GROTON WATER DEPARTMENT MA2115000 | GROTON | 5,456 | — | — | Compliant |
| TOPSFIELD WATER DEPARTMENT MA3298000 | TOPSFIELD | 5,435 | 9 | 5.4 | Exceeds |
| LEE WATER DEPT MA1150000 | LEE | 5,420 | — | — | Compliant |
| BARNSTABLE FIRE DISTRICT MA4020000 | BARNSTABLE | 5,400 | 4.4 | 7.1 | Exceeds |
| ONSET FIRE DISTRICTWATER DEPT. MA4310003 | ONSET | 5,392 | — | 7.1 | Exceeds |
| DIGHTON WATER DISTRICT MA4076000 | NORTH DIGHTON | 5,264 | 5.5 | 4.1 | Exceeds |
| MANCHESTER BY THE SEA DPW MA3166000 | MANCHESTER BY THE SEA | 5,170 | 12 | 4.8 | Exceeds |
| COTUIT FIRE DISTRICT WATER DEPARTMENT MA4020003 | COTUIT | 4,938 | — | — | Compliant |
| HADLEY DPW WATER DIVISION MA1117002 | HADLEY | 4,871 | — | — | Compliant |
| SOUTHAMPTON WATER DEPT MA1276000 | SOUTHAMPTON | 4,853 | — | — | Compliant |
| LYNNFIELD WATER DIST. (MWRA) MA3164001 | LYNNFIELD | 4,820 | — | — | Compliant |
| PALMER WATER DISTRICT NO.1 MA1227000 | PALMER | 4,789 | — | — | Compliant |
| TOWN OF AVON MA4018000 | AVON | 4,777 | 5.1 | 6 | Exceeds |
| NORTH SAGAMORE WATER DISTRICT MA4036002 | SAGAMORE BEACH | 4,668 | — | — | Compliant |
| STURBRIDGE WATER DEPARTMENT MA2287000 | STURBRIDGE | 4,567 | — | — | Compliant |
| UPTON DPW WATER/WASTEWATER DIVISION MA2303000 | UPTON | 4,420 | — | — | Compliant |
| DOUGLAS WATER DEPARTMENT MA2077000 | DOUGLAS | 4,400 | — | — | Compliant |
| TYNGSBOROUGH WATER DISTRICT MA3301000 | TYNGSBOROUGH | 4,382 | 4.6 | — | Exceeds |
| GREAT BARRINGTON FIRE DIST MA1113000 | GREAT BARRINGTON | 4,375 | — | — | Compliant |
| PAXTON WATER DEPARTMENT MA2228000 | PAXTON | 4,300 | — | — | Compliant |
| MONSON WATER AND SEWER DEPT MA1191000 | MONSON | 4,212 | — | — | Compliant |
| SHIRLEY WATER DISTRICT MA2270000 | SHIRLEY | 4,121 | 6.9 | — | Exceeds |
| BARRE WATER DEPARTMENT MA2021000 | BARRE | 4,098 | — | — | Compliant |
| WENHAM WATER DEPT. MA3320000 | WENHAM | 3,942 | 7.2 | 6.4 | Exceeds |
| NORTH BROOKFIELD WATER DEPARTMENT MA2212000 | NORTH BROOKFIELD | 3,903 | — | — | Compliant |
| NORTH RAYNHAM WATER DISTRICT MA4245002 | RAYNHAM | 3,902 | — | — | Compliant |
| SOUTH DEERFIELD WATER SUPPLY DISTRICT MA1074001 | SOUTH DEERFIELD | 3,800 | — | — | Compliant |
| WESTMINSTER DEPARTMENT OF PUBLIC WORKS MA2332000 | WESTMINSTER | 3,741 | — | — | Compliant |
| CHERRY VALLEY/ ROCHDALE WATER DISTRICT MA2151001 | ROCHDALE | 3,696 | — | — | Compliant |
| ASHBURNHAM WATER DEPARTMENT MA2011000 | ASHBURNHAM | 3,680 | — | — | Compliant |
| MCI SHIRLEY MA2270001 | MILFORD | 3,500 | — | — | Compliant |
| BOYLSTON WATER DISTRICT MA2039000 | BOYLSTON | 3,343 | 6 | — | Exceeds |
| NAHANT WATER DEPT. (MWRA) MA3196000 | NAHANT | 3,334 | — | — | Compliant |
| HATFIELD WATER DEPT MA1127000 | HATFIELD | 3,183 | — | — | Compliant |
| BELCHERTOWN WATER DISTRICT MA1024000 | BELCHERTOWN | 3,098 | — | — | Compliant |
| WEST NEWBURY WATER DEPARTMENT MA3324000 | WEST NEWBURY | 3,080 | — | — | Compliant |
| MCI NORFOLK/CEDAR JUNCTION/WALPOLE MA2208001 | MILFORD | 2,200 | — | — | Compliant |
| MT GREYLOCK REGIONAL SCHOOL MA1341010 | WILLIAMSTOWN | 930 | — | — | Compliant |
| WHATELY WATER DEPARTMENT MA1337010 | SOUTH DEERFIELD | 900 | — | — | Compliant |