What environmental databases are included?

This page aggregates data from eight EPA databases: Safe Drinking Water (SDWIS), Superfund/NPL sites, Toxic Release Inventory (TRI), Air Quality Index (AQI), Leaking Underground Storage Tanks (LUST), NPDES water discharge permits, RCRA hazardous waste, and Brownfields.

What does the Air Quality Index (AQI) mean?

AQI is measured on a scale from 0 to 500. Values under 50 are 'Good,' 51-100 is 'Moderate,' and above 100 is 'Unhealthy for Sensitive Groups.' AQI is measured at the county level since air quality monitoring stations are sparse. Your town shares its county's AQI reading.

What is a Superfund site?

A Superfund site is a location contaminated by hazardous waste that has been placed on the EPA's National Priorities List (NPL) for long-term cleanup. These sites pose serious risks to human health and the environment. Cleanup can take decades and cost hundreds of millions of dollars.

Mount Crested Butte, CO Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Air Qualityi

49Good

Water Systemsi

Water Violationsi

Active NPDESi

4/ 8 total

Air Quality — Gunnison County (2025)i

AQS

The 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.

Good

Median AQI

050100150200300

max 115

PM2.5 Daysi

Ozone Daysi

242

Drinking Wateri

SDWIS

Public 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

Active Systemsi

Recent Violationsi

Community (2)

Recent Violations (Last 5 Years)

MOUNT CRESTED BUTTE WSD

4 violationsLatest: 2023-10-01

EPA

Historical Violations (Over 5 Years Ago)

MERIDIAN LAKE PARK

3 violationsLatest: 2007-07-01

EPA

Wastewater & Stormwater Permits (NPDES)i

NPDES

Under 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

Expired / Terminatedi

MT CRESTED BUTTE WATER AND SAN DIST WWTF100 GOTHIC RDBiosolids|EPA

MT CB WATER + SANITATION DISTRICT WATER TREATMENT PLANT EXPANSION100 GOTHIC ROADPOTW|EPA

CRESTED BUTTE, LLC DBA CRESTED BUTTE MOUNTAIN RESORT12 SNOWMASS ROADMinor Discharge|EPA

MT CRESTED BUTTE WATER AND SAN DIST WWTF100 GOTHIC RDMinor Discharge|EPA