Environment
Williams Bay Elementary — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Williams Bay Elementary in Williams Bay, Wisconsin.
Latest Air Quality Index
42
Good · monitor 47.5 km away
Water health violations 10yr4
TRI sites within 1 mi0
Air Quality
EPA AirNow + AQS · 2024
42
AQI latest — Good
42
AQI 7-day avg
3
Days unhealthy in last 90
50.0
Ozone annual ppb
Public Water System
WILLIAMS BAY WATERWORKS · PWS WI2650060
4
Health-based violations (10yr)
0
Acute violations (10yr)
2,601
Population served
75
Most recent violation type
2025-09-11
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
0
TRI sites within 1 mile
9
TRI sites within 5 miles
4.9 mi
Nearest Superfund (NPL)
DELAVAN MUNICIPAL WELL 4
5.2 mi
Nearest brownfield
PROPERTY 8
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).