Environment
Butte County ROP — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Butte County ROP in Chico, California.
Latest Air Quality Index
39
Good · monitor 6.0 km away
PM2.5 annual7.0 µg/m³
Water health violations 10yr0
TRI sites within 1 mi2
Air Quality
EPA AirNow + AQS · 2024
39
AQI latest — Good
39
AQI 7-day avg
3
Days unhealthy in last 90
7.0
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
47.4
Ozone annual ppb
10.9
NO₂ annual ppb
Public Water System
DEL ORO WATER CO.-PARADISE PINES · PWS CA0410011
0
Health-based violations (10yr)
0
Acute violations (10yr)
10,940
Population served
—
Most recent violation type
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
2
TRI sites within 1 mile
4
TRI sites within 5 miles
21.2 mi
Nearest Superfund (NPL)
KOPPERS CO INC OROVILLE PLANT
0.7 mi
Nearest brownfield
2270 FAIR
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).