Environment
Walnut Square — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Walnut Square in Haverhill, Massachusetts.
Latest Air Quality Index
32
Good · monitor 2.2 km away
PM2.5 annual5.8 µg/m³
Water health violations 10yr0
TRI sites within 1 mi2
Air Quality
EPA AirNow + AQS · 2024
32
AQI latest — Good
32
AQI 7-day avg
3
Days unhealthy in last 90
5.8
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
39.6
Ozone annual ppb
5.3
NO₂ annual ppb
Public Water System
HAVERHILL WATER DEPT · PWS MA3128000
0
Health-based violations (10yr)
0
Acute violations (10yr)
63,235
Population served
03
Most recent violation type
2025-01-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
2
TRI sites within 1 mile
26
TRI sites within 5 miles
3.3 mi
Nearest Superfund (NPL)
HAVERHILL MUNICIPAL LANDFILL
1.1 mi
Nearest brownfield
DUTTON AIRFIELD
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).