In Florida, accuracy of fuel pumps is regulated by the
Florida Department of Agriculture and Consumer Services,
Division of Standards, Bureau of Petroleum Inspection.

Contact Information:
Telephone: (850) 488-9740
Fax : (850) 922-6655
Field Office Telephone: (850) 487-2634
Postal Address:
Bureau of Petroleum Inspection
3125 Conner Blvd.
Lab 1, Mail Stop L29
Tallahassee, FL 32399-1650
Web site:
http://www.doacs.state.fl.us/standar...o/contact.html

Every state has something similar.