The Department inspects petroleum products and service stations for compliance with quality, labeling and advertising requirements. Operation records of weighmasters who "weigh for hire" are audited for compliance with California laws and regulations.

Consumer complaints concerning inaccurate devices, incorrect quantity or price, and gasoline contamination are promptly investigated. Please call (650) 363-4700 or email: smateoag@co.sanmateo.ca.us

Petroleum