Environment
Holly Hall Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Holly Hall Elementary in Elkton, Maryland.
Latest Air Quality Index
34
Good · monitor 9.0 km away
PM2.5 annual5.6 µg/m³
Water health violations 10yr4
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
34
AQI latest — Good
34
AQI 7-day avg
3
Days unhealthy in last 90
5.6
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
48.6
Ozone annual ppb
20.1
NO₂ annual ppb
Public Water System
TOWN OF ELKTON · PWS MD0070011
4
Health-based violations (10yr)
0
Acute violations (10yr)
15,625
Population served
41 (health-based)
Most recent violation type
2025-12-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
17
TRI sites within 5 miles
1.8 mi
Nearest Superfund (NPL)
DWYER PROPERTY GROUND WATER PLUME
1.4 mi
Nearest brownfield
TRIUMPH INDUSTRIAL PARK PARCEL 590 LOT 16 PARCEL 590 LOT 16
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).