Underground Storage Tank (UST) Program

Underground storage tank system illustration

UST Financial Responsibility | Overview

Why Is Financial Responsibility Important?

It's Required by Law

State1 and federal2 law requires owners of underground storage tank systems (USTs) to provide evidence of financial responsibility to the proper regulatory agency (ADEQ). This means that an owner and/or an operator must prove they have the financial capacity to cover cost related to cleaning up confirmed spills or leaks.

It Protects UST Owners/Operators

Beyond being required by law, if an owner or operator does not meet their financial responsibility requirements, they could be at grave financial risk in the event of a spill. Fortunately, ADEQ is here to help you ensure you have sufficient coverage for your UST.

Financial responsibility is also required in order to benefit from ADEQ's Preapproval Program designed to further protect owners/operators against high cleanup costs if their UST leaks. 

How to Demonstrate Financial Responsibility | Learn More >


What Happens If I Don't Prove Financial Responsibility?

Failure to submit the required proof of financial responsibility by the deadline may result in an enforcement action. This may include:

  • the Director issuing a stop use order and affixing a red tag to prohibit fuel delivery to the UST,3
  • civil penalties of up to $25,000 per day,4 and/or
  • injunctive relief5