Fuel Quality Standards

The South Dakota Department of Public Safety authorizes fuel quality standards and enforces fuel rules related to:

  • Standards for the maximum volume percentages of ethanol and methanol in alcohol blended fuels;
  • A program and prescribed methods for the inspection and testing of alcohol blended fuels, petroleum products, biodiesel, and biodiesel blends;
  • Labeling requirements for devices dispensing alcohol blended fuels, biodiesel, and biodiesel blends;
  • Standards setting the specifications and tolerance requirements for petroleum products, biodiesel, and biodiesel blends; and
  • Regulations for filtering systems used on devices dispensing alcohol blended fuels.

All rules conform to appropriate ASTM standards. (Reference South Dakota Statutes 37-2-6)