The Environmental and Compliance Department has a variety of responsibilities ensuring  compliance with City of Jacksonville codes, rules and regulations. Its broad focus includes the environment, parking, animal and mosquito control and licensing for commercial vehicles.

The department has six divisions and one activity:

The Environmental Quality Division monitors air and water quality. 
The Mosquito Control Division works to reduce the mosquito population.
The Animal Care and Protective Services Division enforces the city's animal control laws, supports a spay and neuter program and provides pet adoption services.
The Municipal Code Compliance Division ensures compliance with zoning, safety, weed control and other city codes.
The Parking Facilities and Enforcement Division manages public parking lots and garages, enforces parking laws and regulates commercial vehicles operating within Jacksonville.
The Consumer Affairs Division works to protect consumers against unscrupulous sellers and unsafe products.
Clean It Up, Green It Up promotes environmental awareness, anti-litter campaigns and community-wide litter removal programs.