South Coast Air Quality Management District
Environmental ServicesCalifornia, United States501-1000 Employees
South Coast Air Quality Management District is the regional regulatory authority focused on improving air quality across parts of Southern California, including Los Angeles, Orange, Riverside, and San Bernardino counties and the Coachella Valley. Based in Diamond Bar, California, the agency serves a population center of more than 17 million people and maintains a workforce described as hundreds of employees. The district primarily regulates emissions from stationary sources, including large power plants, refineries, gas stations, and consumer products that release solvents, through a broad permit system. About 28,400 businesses operate under its permits, illustrating the scope of its regulatory reach. In 2026 the district approved funding to purchase zero-emission school buses.
1-888-653-2347 
support@leadiq.com 
