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770 Massachusetts water systems have inventoried 1,863,955 service lines for EPA. 28,562 (1.5%) are confirmed lead and 349,972 (19%) are still of unknown material. Below: every large or city-linked Massachusetts utility ranked by lead lines.
Massachusetts water systems reported 28,562 lead service lines and 13,175 galvanized lines requiring replacement as of Q2 2026 — 1.5% of the 1,863,955 lines inventoried and 1.3% of the national lead total, ranking #13 of 51. CITY OF NEW BEDFORD DPI reports the most in the state (5,676).
CITY OF NEW BEDFORD DPI (5,676), MEDFORD WATER DEPT. (MWRA) (5,128), BRAINTREE WATER AND SEWER DEPT. (3,448) lead the list; 86 Massachusetts systems report at least one lead line in total.
Find your utility in the table below, then check its published service line inventory (most utilities post an address-lookup map) or call the number on your water bill. Utilities must notify customers whose line is lead, galvanized-requiring-replacement or unknown. You can also test the pipe entering your home: lead is soft, dull gray, non-magnetic and turns shiny when scratched.
Under EPA's Lead and Copper Rule Improvements, systems must replace lead and galvanized-requiring-replacement lines within 10 years starting in 2027; systems with very high counts can receive longer deadlines. Ask your utility for its replacement plan and whether it covers the homeowner-owned portion.
Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking, flush the tap after water has sat for hours, never use hot tap water for drinking or infant formula, and confirm your actual level with a certified lab test.
Source: EPA SDWIS Service Line Inventory, Q2 2026 snapshot (updated 2026-08-18). Counts are service lines, not people.
A certified mail-in lab test shows exactly what's in your water — lead plus dozens of other contaminants — with EPA-grade accuracy. Know your real levels before spending on a filter.
Certified lab · results in days
Community systems serving 50,000+ people plus systems linked to a city report on this site (54 shown). State totals above include every reporting system.
| # | Water system | Status | Lead | GRR | Unknown | Total lines | City report |
|---|---|---|---|---|---|---|---|
| 1 | CITY OF NEW BEDFORD DPI MA4201000 · 101,079 served | Lead service lines present | 5,676 | 0 | 14 | 26,066 | |
| 2 | MEDFORD WATER DEPT. (MWRA) MA3176000 · 61,700 served | Lead service lines present | 5,128 | 2 | 4,657 | 14,683 | |
| 3 | BRAINTREE WATER AND SEWER DEPT. MA4040000 · 39,143 served | Lead service lines present | 3,448 | 40 | 2,814 | 12,180 | |
| 4 | MALDEN WATER DIVISION (MWRA) MA3165000 · 66,263 served | Lead service lines present | 2,460 | 10 | 689 | 11,336 | |
| 5 | BOSTON WATER AND SEWER COMMISSION (MWRA) MA3035000 · 675,647 served | Lead service lines present | 2,184 | 265 | 4,180 | 99,945 | |
| 6 | CAMBRIDGE WATER DEPARTMENT MA3049000 · 118,214 served | Lead service lines present | 2,058 | 137 | 104 | 15,041 | Cambridge → |
| 7 | EVERETT WATER DEPT. (MWRA) MA3093000 · 49,075 served | Lead service lines present | 1,071 | 2 | 1,428 | 8,129 | |
| 8 | FALL RIVER WATER DEPARTMENT MA4095000 · 94,000 served | Lead service lines present | 906 | 17 | 4,892 | 19,547 | Fall River → |
| 9 | QUINCY WATER DEPT. (MWRA) MA3243000 · 106,000 served | Lead service lines present | 451 | 1 | 44 | 20,858 | Quincy → |
| 10 | REVERE WATER DIVISION (MWRA) MA3248000 · 62,186 served | Lead service lines present | 443 | 24 | 571 | 10,703 | |
| 11 | HAVERHILL WATER DEPT MA3128000 · 61,277 served | Lead service lines present | 327 | 1 | 7,277 | 17,565 | |
| 12 | LOWELL REGIONAL WATER UTILITY MA3160000 · 120,418 served | Lead service lines present | 274 | 13 | 1,558 | 26,989 | |
| 13 | MARLBOROUGH DPW WATER DIV. (MWRA) MA2170000 · 41,799 served | Lead service lines present | 268 | 45 | 1,503 | 11,069 | Marlborough → |
| 14 | NORWOOD WATER DEPT. (MWRA) MA4220000 · 29,909 served | Lead service lines present | 233 | 0 | 5,116 | 8,395 | Norwood → |
| 15 | LYNN WATER AND SEWER COMM MA3163000 · 101,253 served | Lead service lines present | 224 | 59 | 7,765 | 20,526 | |
| 16 | READING WATER DEPARTMENT (MWRA) MA3246000 · 26,262 served | Lead service lines present | 154 | 105 | 216 | 7,761 | |
| 17 | SOMERVILLE WATER DEPT. (MWRA) MA3274000 · 81,045 served | Lead service lines present | 101 | 0 | 50 | 15,109 | |
| 18 | CHELSEA WATER DEPT. (MWRA) MA3057000 · 40,787 served | Lead service lines present | 87 | 1 | 4,403 | 5,885 | Chelsea → |
| 19 | LAWRENCE WATER WORKS MA3149000 · 89,143 served | Lead service lines present | 65 | 0 | 406 | 12,777 | Lawrence → |
| 20 | PEABODY WATER DEPT. MA3229000 · 54,481 served | Lead service lines present | 53 | 0 | 2,868 | 14,931 | |
| 21 | CHICOPEE WATER DEPT (MWRA) MA1061000 · 55,560 served | Lead service lines present | 48 | 6 | 11,134 | 15,695 | Chicopee → |
| 22 | WAKEFIELD WATER DEPT MA3305000 · 27,090 served | Lead service lines present | 39 | 42 | 1,492 | 8,184 | Wakefield → |
| 23 | LEOMINSTER WATER DIVISION MA2153000 · 41,683 served | Lead service lines present | 33 | 45 | 761 | 12,221 | Leominster → |
| 24 | ARLINGTON WATER DEPT. (MWRA) MA3010000 · 46,308 served | Lead service lines present | 30 | 2 | 3,586 | 12,705 | |
| 25 | NEEDHAM WATER DEPT MA3199000 · 31,664 served | Lead service lines present | 25 | 60 | 28 | 10,213 | |
| 26 | WATERTOWN DEPARTMENT OF PUBLIC WORKS MA3314000 · 35,985 served | Lead service lines present | 21 | 0 | 0 | 7,662 | |
| 27 | ANDOVER WATER DEPT MA3009000 · 36,569 served | Lead service lines present | 14 | 0 | 0 | 13,149 | |
| 28 | WEYMOUTH WATER DEPARTMENT MA4336000 · 57,871 served | Lead service lines present | 8 | 40 | 611 | 16,937 | |
| 29 | FALMOUTH WATER DEPT MA4096000 · 97,551 served | Lead service lines present | 5 | 13 | 14,298 | 22,531 | |
| 30 | BELMONT WATER DEPT. (MWRA) MA3026000 · 27,442 served | Lead service lines present | 4 | 0 | 0 | 7,394 | Belmont → |
| 31 | PITTSFIELD DPU WATER DEPT MA1236000 · 43,927 served | Lead service lines present | 3 | 33 | 3,300 | 15,293 | |
| 32 | NEWTON WATER DEPT. (MWRA) MA3207000 · 88,931 served | Lead service lines present | 3 | 284 | 77 | 24,126 | Newton → |
| 33 | WESTFIELD DPWWATER DIVISION MA1329000 · 41,094 served | Lead service lines present | 1 | 14 | 3,722 | 11,512 | |
| 34 | BROCKTON WATER DEPARTMENT MA4044000 · 105,788 served | Lead service lines present | 0 | 650 | 7,971 | 24,478 | |
| 35 | BURLINGTON WATER DEPT MA3048000 · 25,864 served | Lead service lines present | 0 | 2 | 4,717 | 7,188 | Burlington → |
| 36 | ATTLEBORO WATER DEPT MA4016000 · 46,461 served | Lead service lines present | 0 | 844 | 1,402 | 14,542 | |
| 37 | WORCESTER DPWP, WATER SUPPLY DIVISION MA2348000 · 206,518 served | No lead service lines reported | 0 | 0 | 946 | 44,857 | |
| 38 | HOLYOKE WATER WORKS MA1137000 · 37,838 served | Lead service lines present | 0 | 101 | 629 | 8,448 | |
| 39 | METHUEN WATER DEPT MA3181000 · 53,059 served | Lead service lines present | 0 | 563 | 372 | 15,449 | |
| 40 | TAUNTON WATER DIVISION MA4293000 · 62,165 served | Lead service lines present | 0 | 18 | 348 | 16,544 | |
| 41 | WOBURN WATER DEPT. MA3347000 · 40,876 served | Lead service lines present | 0 | 162 | 261 | 11,689 | Woburn → |
| 42 | NATICK WATER AND SEWER DIVISION MA3198000 · 37,006 served | Lead service lines present | 0 | 16 | 212 | 10,992 | Natick → |
| 43 | BROOKLINE WATER AND SEWER DIVISION MA3046000 · 63,191 served | Lead service lines present | 0 | 1 | 107 | 9,129 | |
| 44 | FRAMINGHAM WATER DEPT. (MWRA) MA3100000 · 72,362 served | Lead service lines present | 0 | 60 | 61 | 18,767 | |
| 45 | SPRINGFIELD WATER AND SEWER COMMISSION MA1281000 · 169,170 served | Lead service lines present | 0 | 49 | 22 | 45,187 | |
| 46 | MWRA MA6000000 · 2,580,000 served | No lead service lines reported | 0 | 0 | 0 | 34 | |
| 47 | INIMA USA / AQUARIA LLC MA4076004 · 105,643 served | No inventory reported yet | 0 | 0 | 0 | 0 | |
| 48 | SALEM AND BEVERLY WATER SUPPLY BOARD MA3030001 · 90,330 served | No inventory reported yet | 0 | 0 | 0 | 0 | Beverly →Salem → |
| 49 | WALTHAM WATER DEPARTMENT MA3308000 · 65,218 served | No lead service lines reported | 0 | 0 | 0 | 14,226 | Waltham → |
| 50 | DENNIS WATER DISTRICT MA4075000 · 65,000 served | No lead service lines reported | 0 | 0 | 0 | 14,543 | |
| 51 | UPPER CAPE REGIONAL WATER COOPERATIVE MA4261024 · 56,250 served | No inventory reported yet | 0 | 0 | 0 | 0 | |
| 52 | CENTERVILLE OSTERVILLE MARSTONS MILLS WD MA4020002 · 50,000 served | No lead service lines reported | 0 | 0 | 0 | 12,436 | |
| 53 | RANDOLPH/HOLBROOK JOINT WATER BOARD MA4244001 · 46,519 served | No inventory reported yet | 0 | 0 | 0 | 0 | |
| 54 | FITCHBURG DPW DIVISION OF WATER SUPPLY MA2097000 · 41,946 served | No lead service lines reported | 0 | 0 | 0 | 11,234 |
A lead or unknown service line means lead can enter water after it leaves the treatment plant, so city-level test results understate what reaches your tap. Filter drinking and cooking water with an NSF/ANSI 53 lead-certified system, and see the lead in drinking water guide or Massachusetts city water reports.
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