Environment
Guilford Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Guilford Elementary in Sterling, Virginia.
Latest Air Quality Index
41
Good · monitor 6.9 km away
PM2.5 annual7.3 µg/m³
Water health violations 10yr0
TRI sites within 1 mi2
Air Quality
EPA AirNow + AQS · 2024
41
AQI latest — Good
41
AQI 7-day avg
1
Days unhealthy in last 90
7.3
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
48.4
Ozone annual ppb
13.4
NO₂ annual ppb
Public Water System
TART LUMBER COMPANY, INC. · PWS VA6107623
0
Health-based violations (10yr)
0
Acute violations (10yr)
60
Population served
3A
Most recent violation type
2025-02-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
2
TRI sites within 1 mile
13
TRI sites within 5 miles
3.8 mi
Nearest Superfund (NPL)
HIDDEN LANE LANDFILL
2.0 mi
Nearest brownfield
HERNDON WASTEWATER TREATMENT FACILITY BFP 025
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).