Department of Agriculture, Trade and Consumer Protection

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Wis. Admin. Code ch.​ ATCP 93 requires facilities that store, transfer, or dispense flammable, combustible, or hazardous liquids to be registered with the Wisconsin Depa​rtment of​ Agriculture​, Tra​de and Consumer Protection (DATCP).

Storage Tank Permitting​

All in-use and temporarily-out-of-service storage tanks that a​re 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 f​or storing motor fuel.
  
• Underground storage tanks storing heating oil for consumptive use on the premises.
  
• Tanks located at an EPA Superfund site.
  

​​​Online permitting

​Storage Tank Registration

All in-use and temporarily out-of-service storage tanks that are used to store a regulated substance must be registered within 15 business days of completion of the installation. Any changes in ownership, mailing address, or facilities must be submitted to DATCP within 15 business days of the change.

To register a storage tank, complete the required Storage Tank Registration Form.

• Aboveground Storage Tank Registration (Word or PDF)
  
• Underground Storage Tank Registration (Word or P​DF)
  

Send the completed form to DATCP by email at DATCPStorageTanks@wisconsin.gov​ or by mail to:

Wisconsin Department of Agriculture, Trade and Consumer Protection
Bureau of Weights and Measures Storage Tank Regulation
PO Box 7837
Madison, WI 53707-7837

The following types of tanks are exempt from the registration requirements:

• Aboveground tanks with a capacity of less than 5,000 gallons.
• Tank vehicles.
• Portable tanks and moveable tanks that are located on a property for fewer than 24 months.
• Tanks that are located at an EPA Superfund site.​