Environment
Union Mill Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Union Mill Elementary in Clifton, Virginia.
Latest Air Quality Index
38
Good · monitor 21.1 km away
PM2.5 annual6.8 µg/m³
Water health violations 10yr0
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
38
AQI latest — Good
38
AQI 7-day avg
3
Days unhealthy in last 90
6.8
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
47.3
Ozone annual ppb
8.9
NO₂ annual ppb
Public Water System
CLIFTON PRESBY. CHURCH PRESCHOOL · PWS VA6059292
0
Health-based violations (10yr)
0
Acute violations (10yr)
45
Population served
27
Most recent violation type
2025-07-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
5
TRI sites within 5 miles
16.3 mi
Nearest Superfund (NPL)
HIDDEN LANE LANDFILL
11.4 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).