Air Quality
Good
Water Violations
94
Active Permits
4
Air quality in Delta County is rated good with a median AQI of 28 (117 days measured in 2025). 15 community water systems serve the area, with 94 recent violations in the last 5 years.
Air Quality — Delta 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
97Ozone 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
15Active Systemsi
17Recent Violationsi
94Recent Violations (Last 5 Years)
CEDAREDGE TOWN OF
COALBY DOMESTIC WC
GINTERS GROVE DOMESTIC WATER CORP
UPPER SURFACE CREEK DOMESTIC WUA
APACHE MHP
VALLEY WEST PARK
TRINIDAD MANUFACTURED HOME COMMUNITY