How often should UST systems undergo leak detection testing?

The frequency of leak detection testing for Underground Storage Tank (UST) systems is crucial to maintaining environmental safety and compliance with regulatory requirements. Testing at least once every 30 days is essential because it allows for early identification of any leaks. This is important not only for preventing contamination of the surrounding environment but also for ensuring that the operation of the UST system remains within the legal safety standards set by environmental agencies.

Regular testing is critical, as leaks can occur without obvious signs, and the consequences of failing to detect a leak in a timely manner can be severe, including environmental damage and financial liabilities due to cleanup efforts. The 30-day interval strikes a balance between sufficient monitoring and practical operational considerations for facilities managing these systems.

Other frequencies, such as once a year or quarterly, could potentially allow for significant delays in leak detection, increasing the risk of environmental harm. Testing only during installation does not provide ongoing assurance that the system remains leak-free after it has been put into service.