Air Qualityi
Water Systemsi
Water Violationsi
76TRI Facilitiesi
Active NPDESi
Air Quality — Jefferson 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
0Ozone Daysi
273Drinking Wateri
SDWISPublic water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Transient systems serve places like gas stations or restaurants. Violations indicate a system failed to meet federal drinking water standards.
Community Systemsi
50Active Systemsi
40Recent Violationsi
76Recent Violations (Last 5 Years)
CREEKSIDE SOUTH ESTATES METRO DISTRICT
KIMBERLY HILLS MHP
LAMPLIGHTER MHP
THORNTON ESTATES
SIERRA BONITA ESTATES
COUNTRYSIDE OF LONGMONT
GRAND MEADOW OF LONGMONT MHP
LONGVIEW MHP
SEDALIA WSD
SPRING VALLEY MD NO 1
CANTERBURY PARK
CANYON RIDGE
LAMPLIGHTER RHP
THE SPRINGS MHP
SADDLEBACK RV
ELEVADO ESTATES LLC
SHERIDAN MHP
GREEN MOUNTAIN WSD
Historical Violations (Over 5 Years Ago)
COMMERCE HEIGHTS
WIKIUP MHP
COUNTRYSIDE VILLAGE OF DENVER
RIVERDALE PEAKS II MD
CONSOLIDATED MUTUAL MAPLE GROVE
INSPIRATION VALLEY MHP
CONSOLIDATED MUTUAL WATER COMPANY
MEADOWBROOK WD
Toxic Release Inventory (TRI)i
TRIFactories, refineries, and other industrial facilities that use or store hazardous chemicals are required to report their releases annually to the EPA. Being listed here does not mean a violation occurred — it means the facility is transparently tracking its chemical usage.
Reporting Facilitiesi
7With Chemical Datai
4Wastewater & Stormwater Permits (NPDES)i
NPDESUnder the Clean Water Act, any facility that discharges wastewater or stormwater into rivers, lakes, or streams must hold an NPDES permit. "Effective" means the permit is currently active and the facility is authorized to discharge under its permit conditions.
Active Permitsi
8Expired / Terminatedi
42Nearest Hazardous Waste Disposal Facilitiesi
RCRAThese are the closest licensed facilities where hazardous waste (chemicals, solvents, industrial byproducts) can be legally treated, stored, or disposed of.
Cleanup Sites (Brownfields)i
EPA BrownfieldsFormer industrial or commercial properties where contamination has been found. "Remedy Complete" means cleanup is finished. "Construction Complete" means cleanup infrastructure is built but monitoring continues. "In Progress" means the site is still being investigated or cleaned up.