Environment
Collegium CS — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Collegium CS in Exton, Pennsylvania.
Latest Air Quality Index
38
Good · monitor 22.6 km away
PM2.5 annual6.8 µg/m³
Water health violations 10yr10
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
38
AQI latest — Good
38
AQI 7-day avg
1
Days unhealthy in last 90
6.8
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
48.1
Ozone annual ppb
20.2
NO₂ annual ppb
Public Water System
WETHERILL ESTATES · PWS PA1150209
10
Health-based violations (10yr)
0
Acute violations (10yr)
250
Population served
31
Most recent violation type
2023-05-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
32
TRI sites within 5 miles
3.1 mi
Nearest Superfund (NPL)
A I W FRANK MID COUNTY MUSTANG
5.2 mi
Nearest brownfield
DOWNINGTOWN AMTRAK REPAIR YARD G3DRNY00
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).