Environment
Howell Mountain Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Howell Mountain Elementary in Angwin, California.
Latest Air Quality Index
19
Good · monitor 37.8 km away
Water health violations 10yr0
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
19
AQI latest — Good
19
AQI 7-day avg
1
Days unhealthy in last 90
Public Water System
PACIFIC UNION COLLEGE · PWS CA2810012
0
Health-based violations (10yr)
0
Acute violations (10yr)
1,958
Population served
—
Most recent violation type
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
0
TRI sites within 5 miles
31.5 mi
Nearest Superfund (NPL)
SULPHUR BANK MERCURY MINE
10.9 mi
Nearest brownfield
PLYMOUTH MINE
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).