Environment
John Muir Charter — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of John Muir Charter in Grass Valley, California.
Latest Air Quality Index
23
Good · monitor 3.1 km away
PM2.5 annual4.2 µg/m³
Water health violations 10yr0
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
23
AQI latest — Good
23
AQI 7-day avg
3
Days unhealthy in last 90
4.2
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
51.4
Ozone annual ppb
Public Water System
NEVADA ID - E. GEORGE, BANNER MOUNTAIN · PWS CA2910004
0
Health-based violations (10yr)
0
Acute violations (10yr)
17,154
Population served
—
Most recent violation type
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
6
TRI sites within 5 miles
5.7 mi
Nearest Superfund (NPL)
LAVA CAP MINE
0.3 mi
Nearest brownfield
530 FREEMAN LANE
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).