Environment
Ohlone Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Ohlone Elementary in Hercules, California.
Latest Air Quality Index
52
Moderate · monitor 9.1 km away
PM2.5 annual9.8 µg/m³
Water health violations 10yr1
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
52
AQI latest — Moderate
52
AQI 7-day avg
3
Days unhealthy in last 90
9.8
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
37.8
Ozone annual ppb
16.4
NO₂ annual ppb
Public Water System
SONOMA RANCH MUTUAL WATER COMPANY · PWS CA4900843
1
Health-based violations (10yr)
0
Acute violations (10yr)
151
Population served
2E (health-based)
Most recent violation type
2024-10-17
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
15
TRI sites within 5 miles
7.8 mi
Nearest Superfund (NPL)
UNITED HECKATHORN CO
0.9 mi
Nearest brownfield
PROPOSED HERCULES MIDDLE SCHOOL
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).