Air Quality
Good
Water Violations
19
Active Permits
25
Air quality in Brown County is rated good with a median AQI of 37 (181 days measured in 2025). 4 community water systems serve the area, with 19 recent violations in the last 5 years.
Air Quality — Brown County (2025)i
AQSThe Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0-50 is considered good; 51-100 is moderate; above 100 may be unhealthy for sensitive groups.
Median AQI
PM2.5 Daysi
119Ozone Daysi
62Drinking Wateri
SDWISPublic water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Violations indicate a system failed to meet federal drinking water standards.
Community Systemsi
4Active Systemsi
5Recent Violationsi
19Recent Violations (Last 5 Years)
