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    Complyrpedia is the knowledge base for businesses that are required to comply with California environmental regulations

Local Air Districts


In California, local air districts are responsible for the implementation and enforcement of stationary air pollution sources. There are 35 air districts in California. Air basins dictate the boundaries of local air districts.

Geographic Jurisdiction

The following is a list of California Air districts. Air districts were originally defined by county. However, subsequent legislation allowed air districts to combine larger geographic areas that can be considered one air basin. The California Air Resources Board provides an excellent tool that will look up air district jurisdiction by zip code.

Activities Regulated

Any stationary, activity or contrivance that pollutes, has the potential to pollute or is designed to prevent pollution may be under the purview of your local air district. Typically, air districts regulate some or all of the following activities:

  • Fuel standards
  • Combustion based power generation
  • Refineries
  • Smelting
  • Cement kilns
  • General manufacturing
  • Coating operations (painting)
  • Combustion based water heating (including boilers)
  • Solvent use
  • Adhesives
  • Gasoline dispensing
  • Wood combustion
  • Open burning
  • Sand blasting
  • Portable equipment
  • Fugitive dust


Complyrs (currently) offers specific programs to assist organizations with the following activities/equipment that are regulated by the local air district:


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