Air Quality
Good
Water Violations
127
Air quality in Grand County is rated good with a median AQI of 47 (303 days measured in 2025). 10 community water systems serve the area, with 127 recent violations in the last 5 years.
Air Quality — Grand 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
98Ozone Daysi
205Drinking 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
10Active Systemsi
25Recent Violationsi
127Recent Violations (Last 5 Years)
MOAB CITY
THOMPSON SPECIAL SERVICES DISTRICT
DAY STAR ADVENTIST ACADEMY
ARCHES NATIONAL PARK HQ
SORREL RIVER RANCH WATER
SAN JUAN SPANISH VALLEY SSD
Historical Violations (Over 5 Years Ago)
GRAND WATER AND SEWER AGENCY