The district provides conservation services for Southern California.

Address: 21865 Copley Dr. Diamond Bar CA 91765
Website: http://www.aqmd.gov
Phones:
  • Public Information Request Line Service/Intake (909) 396-2039, 800) CUT SMOG- State smoking auto complaint line/ Public Information Line Service/Intake (800) 288-7664, General line Service/Intake and Administration (909) 396-2000, FAX (909) 396-3342