Air Quality
Good
Water Violations
42
Active Contamination
2
Active Permits
6
Air quality in Pitkin County is rated good with a median AQI of 21 (273 days measured in 2025). 14 community water systems serve the area, with 42 recent violations in the last 5 years. 2 contamination sites are tracked, all with completed or ongoing remediation.
Air Quality — Pitkin 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
234Ozone Daysi
0Drinking 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
14Active Systemsi
19Recent Violationsi
42Recent Violations (Last 5 Years)
SOPRIS VILLAGE HOA
FOX RUN MEADOWS HOA
ASPEN CITY OF
PHILLIPS MOBILE HOME PARK
PITKIN IRON HOA
STARWOOD METROPOLITAN DISTRICT
WHITE HORSE SPRINGS WD
Historical Violations (Over 5 Years Ago)
Industrial Monitoringi
Contamination Sitesi
Contaminated sites tracked by the EPA and state agencies. Superfund sites are the most seriously contaminated locations. Brownfields are former industrial properties being cleaned up for reuse. LUST sites have confirmed leaks from underground storage tanks.