Environment
Orr Creek — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Orr Creek in Ukiah, California.
Latest Air Quality Index
39
Good · monitor 1.8 km away
PM2.5 annual7.0 µg/m³
Water health violations 10yr0
TRI sites within 1 mi1
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)
39.4
Ozone annual ppb
Public Water System
UKIAH, CITY OF · PWS CA2310003
0
Health-based violations (10yr)
0
Acute violations (10yr)
16,607
Population served
52
Most recent violation type
2022-10-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
1
TRI sites within 1 mile
9
TRI sites within 5 miles
3.7 mi
Nearest Superfund (NPL)
COAST WOOD PRESERVING
1.3 mi
Nearest brownfield
PINOLEVILLE RANCHERIA SITE
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).