Environment
Squantum — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Squantum in Quincy, Massachusetts.
Latest Air Quality Index
34
Good · monitor 4.8 km away
PM2.5 annual6.2 µg/m³
Water health violations 10yr0
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
34
AQI latest — Good
34
AQI 7-day avg
1
Days unhealthy in last 90
6.2
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
36.9
Ozone annual ppb
22.0
NO₂ annual ppb
Public Water System
QUINCY WATER DEPT. (MWRA) · PWS MA3243000
0
Health-based violations (10yr)
0
Acute violations (10yr)
106,000
Population served
—
Most recent violation type
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
32
TRI sites within 5 miles
6.5 mi
Nearest Superfund (NPL)
LOWER NEPONSET RIVER
1.9 mi
Nearest brownfield
3 ARLINGTON STREET
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).