Environment
Bancroft Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Bancroft Elementary in Walnut Creek, California.
Latest Air Quality Index
22
Good · monitor 1.3 km away
PM2.5 annual3.9 µg/m³
Water health violations 10yr0
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
22
AQI latest — Good
22
AQI 7-day avg
3
Days unhealthy in last 90
3.9
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
36.1
Ozone annual ppb
12.8
NO₂ annual ppb
Public Water System
CASA MEDANOS WATER SYSTEM · PWS CA0707594
0
Health-based violations (10yr)
0
Acute violations (10yr)
45
Population served
52
Most recent violation type
2022-10-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
8
TRI sites within 5 miles
8.6 mi
Nearest Superfund (NPL)
CONCORD NAVAL WEAPONS STATION
9.8 mi
Nearest brownfield
THE ATCHISON
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).