Massachusetts — 4th District
119th Congress · 67 ZIP codes · Avg score 63/100 · Grade C · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 67 ZIP codes in Massachusetts's 4th District: the district earns a grade C (63/100). 131 EPA violations on record, 45 health-based.
Top Contaminants
ZIP Codes in This District
67 ZIP codes tracked in Massachusetts's 4th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 02031 | Mansfield | 83 | B | 1 |
| 2 | 02054 | Millis | 83 | B | 0 |
| 3 | 02445 | Brookline | 83 | B | 0 |
| 4 | 02783 | Taunton | 81 | B | 1 |
| 5 | 02038 | Franklin | 78 | B | 0 |
| 6 | 02048 | Mansfield | 78 | B | 1 |
| 7 | 02052 | Medfield | 78 | B | 1 |
| 8 | 02067 | Sharon | 78 | B | 0 |
| 9 | 02446 | Brookline | 78 | B | 0 |
| 10 | 02492 | Needham | 78 | B | 0 |
| 11 | 02771 | Seekonk | 78 | B | 0 |
| 12 | 02769 | Rehoboth | 77 | B | 3 (1 health) |
| 13 | 02767 | Raynham | 76 | B | 0 |
| 14 | 02762 | Plainville | 75 | B | 2 (2 health) |
| 15 | 02019 | Bellingham | 74 | B | 6 (4 health) |
| 16 | 02056 | Norfolk | 74 | B | 6 |
| 17 | 02348 | Lakeville | 72 | B | 8 |
| 18 | 02777 | Swansea | 71 | B | 2 |
| 19 | 02780 | Taunton | 71 | B | 1 |
| 20 | 01504 | Blackstone | 70 | B | 0 |
| 21 | 01747 | Hopedale | 70 | B | 0 |
| 22 | 02702 | Assonet | 70 | B | 0 |
| 23 | 02764 | North Dighton | 70 | B | 4 (2 health) |
| 24 | 02030 | Dover | 68 | C | 5 |
| 25 | 01770 | Sherborn | 67 | C | 1 |
| 26 | 02347 | Lakeville | 67 | C | 8 |
| 27 | 01756 | Mendon | 66 | C | 0 |
| 28 | 02447 | Brookline Village | 66 | C | 0 |
| 29 | 02715 | Dighton | 65 | C | 4 (2 health) |
| 30 | 02720 | Fall River | 64 | C | 1 |
| 31 | 02721 | Fall River | 64 | C | 1 |
| 32 | 02724 | Fall River | 64 | C | 1 |
| 33 | 02035 | Foxboro | 63 | C | 0 |
| 34 | 02070 | Sheldonville | 63 | C | 0 |
| 35 | 02458 | Newton | 63 | C | 1 |
| 36 | 02464 | Newton Upper Falls | 63 | C | 0 |
| 37 | 02494 | Needham Heights | 63 | C | 0 |
| 38 | 02718 | East Taunton | 63 | C | 0 |
| 39 | 02763 | Attleboro Falls | 63 | C | 0 |
| 40 | 02779 | Berkley | 63 | C | 0 |
| 41 | 02714 | Dartmouth | 62 | C | 6 (4 health) |
| 42 | 02703 | Attleboro | 59 | C | 23 |
| 43 | 02093 | Wrentham | 58 | C | 21 (11 health) |
| 44 | 02722 | Fall River | 58 | C | 1 |
| 45 | 02723 | Fall River | 58 | C | 1 |
| 46 | 01757 | Milford | 57 | C | 3 (2 health) |
| 47 | 02467 | Chestnut Hill | 55 | C | 0 |
| 48 | 02717 | East Freetown | 55 | C | 0 |
| 49 | 01529 | Millville | 53 | D | 0 |
| 50 | 02457 | Babson Park | 53 | D | 0 |
Overview
Massachusetts's 4th District encompasses 67 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (63/100).
131 EPA violations have been recorded across this district's water systems. 45 are health-based violations. About 43% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Consumer Confidence Report Rule - 36 violations
- Haloacetic Acids (HAA5) - 29 violations
- Stage 1 DBP Rule - 12 violations
- Gross Beta - 8 violations
- Lead and Copper Rule - 8 violations
Housing Context
Homes in this district were built on average around 1963 (~63 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.
Data Sources
- Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
- Congressional district boundaries: U.S. Census Bureau, 119th Congress
- Housing age: U.S. Census Bureau American Community Survey
Updated daily. Data covers 67 ZIP codes in Massachusetts's 4th District.