Petroleum / Hazardous Liquids Storage Tanks Permit & Registration

Wisconsin Administrative Code ATCP 93 requires facilities that store, transfer, or dispense flammable, combustible or hazardous liquids to be registered with DATCP. The following types of tanks are exempt from the registration requirements:

  • Aboveground tanks with a capacity of less than 1,100 gallons that are:

    • farm tanks, construction tanks, heating or used oil tanks for consumption on the premises;

    • tanks used to store Class IIIB liquids other than used oil;

    • or are located inside a building and are used for industrial processes if the tank is connected through piping to the process

  • Aboveground tanks which are used to store nonflammable or noncombustible federally regulated hazardous substances and which have a capacity of less than 5,000 gallons

  • Tank vehicles

  • Tank wagons, portable tanks, and moveable tanks that are located on a property for fewer than 24 months

  • Tanks that are located at a US EPA superfund site

All in-use and temporarily-out-of-service storage tanks that are used to store a regulated substance must have a permit to operate from DATCP. The following types of tanks are exempt from the permitting requirements:

  • Aboveground tanks

  • Farm and residential underground storage tanks with a capacity of less than 1,100 gallons which are used for storing motor fuel

  • Underground storage tanks storing heating oil for consumptive use on the premises

  • Tanks located at a US EPA superfund site

To obtain a permit-to-operate application, please contact the Weights and Measures Bureau at 608-224-4942 or via email: datcpweightandmeasures@wi.gov.

Permitting & Registration Fact Sheets

Resources