Environment
Winthrop — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Winthrop in Melrose, Massachusetts.
Latest Air Quality Index
40
Good · monitor 6.9 km away
PM2.5 annual7.3 µg/m³
Water health violations 10yr1
TRI sites within 1 mi1
Air Quality
EPA AirNow + AQS · 2024
40
AQI latest — Good
40
AQI 7-day avg
3
Days unhealthy in last 90
7.3
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
45.3
Ozone annual ppb
11.2
NO₂ annual ppb
Public Water System
MELROSE WATER DIVISION (MWRA) · PWS MA3178000
1
Health-based violations (10yr)
0
Acute violations (10yr)
29,357
Population served
64 (health-based)
Most recent violation type
2021-11-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
1
TRI sites within 1 mile
76
TRI sites within 5 miles
4.8 mi
Nearest Superfund (NPL)
WELLS G H
1.6 mi
Nearest brownfield
LUDWIG CLEANERS
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).