Environment
Northridge Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Northridge Elementary in Johnstown, Ohio.
Latest Air Quality Index
48
Good · monitor 32.0 km away
PM2.5 annual6.9 µg/m³
Water health violations 10yr0
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
48
AQI latest — Good
48
AQI 7-day avg
1
Days unhealthy in last 90
6.9
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
48.1
Ozone annual ppb
Public Water System
JOHNSTOWN CITY PWS · PWS OH4501512
0
Health-based violations (10yr)
0
Acute violations (10yr)
5,200
Population served
72
Most recent violation type
2025-11-20
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
11
TRI sites within 5 miles
20.2 mi
Nearest Superfund (NPL)
AIR FORCE PLANT 85
3.3 mi
Nearest brownfield
FORMER HIGH SCHOOL AND PARKING LOT
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).