Worcester County, Massachusetts
105 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-03
The systems supplying Worcester County's 105 ZIP codes vary in performance — most meet minimum standards, but violations in select areas are on record.
How Worcester County Compares
How Worcester County Compares
Worcester County scores 5 points below the Massachusetts state average (66/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Worcester County, Massachusetts
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12 (asthma 12%, diabetes 10.3%)
Estimated additional annual cost per homeowner: $1,424, driven primarily by energy_code_gap
Infrastructure: 0.448% avg pipe failure probability, 63% of ZIPs at high risk
69.6% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across Worcester County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 11 violations. Past 5 years: 25 total (25 health-based). Health-based violations are declining versus the prior 2-year window.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,424
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
364,998 housing units in Worcester County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Worcester County
Remediation costs are relatively manageable for most homeowners in Worcester County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Worcester County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Worcester County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Rockwood Meadows | 110 | 21 |
| 2 | Trail Ridge Condominiums | 104 | 19 |
| 3 | Barre Water Department | 4,098 | 18 |
| 4 | Barre Mhp/waterwheel Village | 114 | 18 |
| 5 | Pinewood on the Green Condos | 50 | 17 |
127 total water systems serve Worcester County.
All ZIP Codes in Worcester County
105 ZIP codes tracked in Worcester County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 1092 | West Warren | 70 | B | 0 | $326K |
| 2 | 1331 | Athol | 70 | B | 0 | $257K |
| 3 | 1430 | Ashburnham | 70 | B | 1 | $370K |
| 4 | 1462 | Lunenburg | 70 | B | 0 | $443K |
| 5 | 1504 | Blackstone | 70 | B | 0 | $395K |
| 6 | 1516 | Douglas | 70 | B | 0 | $437K |
| 7 | 1520 | Holden | 70 | B | 0 | $444K |
| 8 | 1532 | Northborough | 70 | B | 0 | $599K |
| 9 | 1535 | North Brookfield | 70 | B | 0 | $317K |
| 10 | 1542 | Rochdale | 70 | B | 0 | $380K |
| 11 | 1566 | Sturbridge | 70 | B | 1 | $393K |
| 12 | 1585 | West Brookfield | 70 | B | 0 | $320K |
| 13 | 1601 | Worcester | 70 | B | 1 | — |
| 14 | 1607 | Worcester | 70 | B | 1 | $341K |
| 15 | 1609 | Worcester | 70 | B | 1 | $422K |
| 16 | 1613 | Worcester | 70 | B | 1 | — |
| 17 | 1740 | Bolton | 70 | B | 0 | $722K |
| 18 | 1747 | Hopedale | 70 | B | 0 | $456K |
| 19 | 1772 | Southborough | 70 | B | 0 | $817K |
| 20 | 1440 | Gardner | 69 | C | 1 (1 health) | $271K |
| 21 | 1507 | Charlton | 69 | C | 2 | $405K |
| 22 | 1562 | Spencer | 69 | C | 2 | $368K |
| 23 | 1570 | Webster | 69 | C | 2 | $340K |
| 24 | 1571 | Dudley | 69 | C | 2 | $372K |
| 25 | 1588 | Whitinsville | 69 | C | 2 | $414K |
| 26 | 1590 | Sutton | 69 | C | 2 | $526K |
| 27 | 1515 | East Brookfield | 68 | C | 5 | $342K |
| 28 | 1540 | Oxford | 68 | C | 9 (2 health) | $346K |
| 29 | 1583 | West Boylston | 68 | C | 1 | $400K |
| 30 | 1473 | Westminster | 67 | C | 3 (3 health) | $394K |
| 31 | 1031 | Gilbertville | 66 | C | 0 | $238K |
| 32 | 1037 | Hardwick | 66 | C | 0 | $409K |
| 33 | 1083 | Warren | 66 | C | 1 | $375K |
| 34 | 1094 | Wheelwright | 66 | C | 0 | $433K |
| 35 | 1434 | Devens | 66 | C | 1 | $472K |
| 36 | 1436 | Baldwinville | 66 | C | 0 | $308K |
| 37 | 1452 | Hubbardston | 66 | C | 1 | $342K |
| 38 | 1468 | Templeton | 66 | C | 0 | $359K |
| 39 | 1526 | Manchaug | 66 | C | 0 | — |
| 40 | 1546 | Shrewsbury | 66 | C | 0 | — |
| 41 | 1612 | Paxton | 66 | C | 0 | $465K |
| 42 | 1614 | Worcester | 66 | C | 1 | — |
| 43 | 1615 | Worcester | 66 | C | 1 | — |
| 44 | 1653 | Worcester | 66 | C | 1 | — |
| 45 | 1654 | Worcester | 66 | C | 1 | — |
| 46 | 1655 | Worcester | 66 | C | 1 | — |
| 47 | 1756 | Mendon | 66 | C | 0 | $606K |
| 48 | 1420 | Fitchburg | 65 | C | 0 | $295K |
| 49 | 1475 | Winchendon | 65 | C | 0 | $295K |
| 50 | 1506 | Brookfield | 65 | C | 1 | $313K |
| 51 | 1510 | Clinton | 65 | C | 0 | $348K |
| 52 | 1534 | Northbridge | 65 | C | 1 | $452K |
| 53 | 1545 | Shrewsbury | 65 | C | 0 | $556K |
| 54 | 1550 | Southbridge | 65 | C | 0 | $267K |
| 55 | 1569 | Uxbridge | 65 | C | 0 | $418K |
| 56 | 1602 | Worcester | 65 | C | 1 | $381K |
| 57 | 1603 | Worcester | 65 | C | 1 | $288K |
| 58 | 1604 | Worcester | 65 | C | 1 | $322K |
| 59 | 1605 | Worcester | 65 | C | 1 | $350K |
| 60 | 1606 | Worcester | 65 | C | 1 | $344K |
| 61 | 1608 | Worcester | 65 | C | 1 | $117K |
| 62 | 1501 | Auburn | 64 | C | 7 (1 health) | $363K |
| 63 | 1560 | South Grafton | 64 | C | 6 | $443K |
| 64 | 1451 | Harvard | 63 | C | 3 | $849K |
| 65 | 1503 | Berlin | 63 | C | 3 | $567K |
| 66 | 1368 | Royalston | 62 | C | 2 | $325K |
| 67 | 1441 | Westminster | 62 | C | 3 (3 health) | — |
| 68 | 1564 | Sterling | 62 | C | 2 (1 health) | $467K |
| 69 | 1580 | Westborough | 62 | C | 5 | — |
| 70 | 1582 | Westborough | 62 | C | 5 | — |
| 71 | 1543 | Rutland | 61 | C | 5 (4 health) | $439K |
| 72 | 1581 | Westborough | 61 | C | 5 | $638K |
| 73 | 1453 | Leominster | 60 | C | 0 | $346K |
| 74 | 1610 | Worcester | 60 | C | 1 | $279K |
| 75 | 1505 | Boylston | 59 | C | 8 | $579K |
| 76 | 1757 | Milford | 57 | C | 3 (2 health) | $444K |
| 77 | 1005 | Barre | 56 | C | 18 | $329K |
| 78 | 1611 | Cherry Valley | 55 | C | 8 | $306K |
| 79 | 1524 | Leicester | 54 | D | 8 | $391K |
| 80 | 1068 | Oakham | 53 | D | 0 | $380K |
| 81 | 1518 | Fiskdale | 53 | D | 0 | $410K |
| 82 | 1519 | Grafton | 53 | D | 10 | $573K |
| 83 | 1522 | Jefferson | 53 | D | 0 | $386K |
| 84 | 1527 | Millbury | 53 | D | 6 | $416K |
| 85 | 1529 | Millville | 53 | D | 0 | $418K |
| 86 | 1561 | South Lancaster | 53 | D | 0 | — |
| 87 | 1745 | Fayville | 53 | D | 0 | $647K |
| 88 | 2462 | Newton Lower Falls | 53 | D | 0 | $1265K |
| 89 | 2466 | Auburndale | 53 | D | 0 | $1165K |
| 90 | 1568 | Upton | 50 | D | 5 | $559K |
| 91 | 2465 | West Newton | 45 | D | 0 | $1099K |
| 92 | 2481 | Wellesley Hills | 45 | D | 0 | $1643K |
| 93 | 1074 | South Barre | 40 | D | 0 | — |
| 94 | 1366 | Petersham | 40 | D | 0 | $375K |
| 95 | 1431 | Ashby | 40 | D | 0 | $362K |
| 96 | 1438 | East Templeton | 40 | D | 0 | $243K |
| 97 | 1508 | Charlton City | 40 | D | 0 | — |
| 98 | 1509 | Charlton Depot | 40 | D | 0 | — |
| 99 | 1523 | Lancaster | 40 | D | 1 | $467K |
| 100 | 1531 | New Braintree | 40 | D | 0 | $387K |
| 101 | 1537 | North Oxford | 40 | D | 0 | $338K |
| 102 | 1538 | North Uxbridge | 40 | D | 0 | — |
| 103 | 1541 | Princeton | 40 | D | 0 | $496K |
| 104 | 1586 | West Millbury | 40 | D | 0 | — |
| 105 | 2468 | Waban | 40 | D | 0 | $1809K |
Recommended Buyer Guides for Worcester County
Below: editorial picks, no sponsored placements.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 69.6% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Worcester County, Massachusetts
Overview
Worcester County in Massachusetts covers 105 ZIP codes with an average Home Safety Score of C (61/100).
54 of 105 ZIP codes have recorded EPA violations. 17 health-based violations have been documented.
← Back to Massachusetts water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.