Fueling FAQs

Arizona consumers buy nearly 2.6 million gallons of gasoline each day at approximately 2,080 service stations utilizing some 72,200 individual gas pumps.  The Arizona Department of Agriculutre, Weights and Measures Services Division is responsible for investigating and auditing all fuel from the refineries to the pipelines, to the storage terminals, to the tanker delivery trucks, to the gas station and gas pumps.

In Arizona, an estimated 2 billion gallons of gasoline are pumped every year. As a business that uses fueling devices, there are quite a few things to know.

This page will touch on a few of the requirements including:

  • The sale and dispensing of motor fuel

  • Signage and labeling requirements

  • Volume testing

  • Diesel fuel rebates



What are the laws for the sale, heating and dispensing of motor fuel?

The following requirements are found in the Arizona Revised Statutes, Title 41, Chapter 15:


What are the signage and labeling requirements?

The following signage and labeling requirements are found in Arizona Administrative Code Title 20, Chapter 2. To view the requirement, scroll down to the reference number pertaining to the area of interest.

  • Price and Grade Posting on External Signs: A.A.C R3-7-704

  • Dispenser and Storage Tank Labeling: A.A.C. R3-7-705

  • Oxygenated Fuel Labels: A.A.C. R3-7-709

  • Motor Fuel Storage Tank Labeling: A.A.C. R3-7-713

  • Product Transfer Documentation: A.A.C. R3-7-707 and A.A.C. R3-7-757



How does volumetric testing work?

In accordance with A.A.C. R3-7-703, the Department is responsible for the volumetric inspection of motor fuels and motor fuel dispensers which includes gasoline, diesel and propane. Field officers examine fueling dispensers at each service station in Arizona approximately once every three years, or when there is a complaint.


What is a volume test?

A volume test includes an officer pumping fuel into a certified test measure to check for the accuracy of the amount of product delivered by the dispenser. Officers follow the volumetric testing procedures found in the National Institute of Standards and Technology Publication 112.


How does the public know a dispenser is compliant?

Officers place an approval seal (sticker) on the dispenser, upon completion of the inspection, if the dispenser passes the test and meets all legal requirements. If the dispenser does not pass the test, the dispenser is "red tagged" which, requires repair and recalibration prior to being placed back into service.

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