Environment
Greenhill School — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Greenhill School in Addison, Texas.
Latest Air Quality Index
54
Moderate · monitor 13.6 km away
PM2.5 annual9.2 µg/m³
Water health violations 10yr0
TRI sites within 1 mi7
Air Quality
EPA AirNow + AQS · 2024
54
AQI latest — Moderate
54
AQI 7-day avg
3
Days unhealthy in last 90
9.2
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
51.2
Ozone annual ppb
16.8
NO₂ annual ppb
Public Water System
TOWN OF ADDISON · PWS TX0570031
0
Health-based violations (10yr)
0
Acute violations (10yr)
17,257
Population served
27
Most recent violation type
2021-01-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
7
TRI sites within 1 mile
71
TRI sites within 5 miles
11.5 mi
Nearest Superfund (NPL)
RSR CORPORATION
3.2 mi
Nearest brownfield
PROPOSED FIRE STATION NO 3
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).