Underground Storage Tank Systems Permit to Operate
Wisconsin Administrative Code ATCP 93 requires facilities that store, transfer, or dispense flammable, combustible or hazardous liquids to be registered with DATCP.

For details regarding the requirements of the program and the process for obtaining and renewing your permit, please go to Petroleum / Hazardous Liquids Storage Tanks Permit & Registration page on the Department's website.

If you need to renew your permit, you will need to register on our site using the PIN information that was previously mailed to you. If you have already registered, you will need to Log On to the site with the email account you previously registered on our site.

Note: Your session will timeout after 10 minutes of inactivity and you may lose your work. Please set aside some uninterrupted time to complete the application.
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