Denver Department of Environmental Health
Division of Environmental Quality

ENVIRONMENTAL COMPLAINTS

The Division of Environmental Quality (DEQ) of the Denver Department of Environmental Health is charged with the responsibility to enforce environmentally related city ordinances. Your complaint must have occurred within the City and County of Denver.

  • Complaints are reviewed each weekday morning for completeness.
  • An inspector from our department may contact you by phone in order to verify the information you provide and to explain our options for correcting any ordinance violation. If there is no violation of a city ordinance, we may not be able to do anything to address your concern.
  • Your information (complainant name, address, phone number) is kept confidential, but is necessary in order for us to contact you if we need additional information and/or to provide you with the results of an investigation. Note that it may be necessary to call a complainant as a court witness if a matter goes to trial.

Currently, we are able to receive online complaints for the environmental concerns listed below. To register a complaint, click on the title, complete the requested information, then click submit.

Idling Vehicles Ambient/Outdoor Air Quality
Smoking Vehicles Water Quality
Construction Noise Solid/Hazardous Waste
Trash Truck Noise Other
Wood Burning

As an option to electronic submittal, your complaint may be submitted:

  1. Via telephone by calling 720-865-5452, or
  2. In writing (along with any supporting documents and/or photos) to:
    Denver Department of Environmental Health
    Environmental Protection Division
    201 West Colfax Avenue, Department 1009
    Denver, Colorado 80202
    720-865-5452
Status of Complaint
Complaint Number: