What Is the Lifespan of an Underground Storage Tank?
Underground storage tanks (USTs) are essential components of fueling stations, industrial facilities, and even some residential properties. These tanks are used to store petroleum, chemicals, and other hazardous substances below ground level, helping to save space and protect materials from environmental exposure. But like any piece of infrastructure, USTs don’t last forever. Knowing the expected lifespan of a UST—and the factors that can impact that lifespan—is crucial for ensuring environmental compliance, protecting property value, and avoiding costly remediation.
At Herbert Lutz & Company, we specialize in the installation, removal, and servicing of USTs throughout New Jersey and Florida. Our decades of experience have shown us just how much tank longevity can vary depending on installation methods, materials used, and ongoing maintenance practices. In this blog post, we’ll explore what determines the life expectancy of an underground storage tank and what you can do to extend it.
Average Lifespan of a UST
The typical underground storage tank has a life expectancy of 15 to 30 years. However, this range is not absolute. Some tanks may fail earlier due to corrosion, poor installation, or environmental conditions. Others, particularly those made of corrosion-resistant materials and well-maintained, may last beyond three decades.
It is important to remember that even if a tank appears to be functioning normally, it may still be deteriorating below the surface. Regulatory bodies like the EPA and state environmental agencies like NJDEP and FDEP require regular inspections and testing precisely because UST degradation isn’t always visible or obvious until a leak occurs.
Factors That Affect UST Longevity
Several factors influence how long a UST can safely remain in service. These include:
1. Tank Material:
Steel tanks, especially older single-walled models, are more prone to corrosion and failure over time. Modern tanks are often made with fiberglass, or they are steel tanks that include cathodic protection and corrosion-resistant coatings. Fiberglass tanks can last longer than steel tanks—often 30 years or more—because they are not subject to rusting.
2. Installation Practices:
Proper installation plays a significant role in a UST’s lifespan. Tanks must be placed on stable foundations, properly backfilled, and fitted with correct piping and containment systems. Mistakes made during installation, such as improper bedding or alignment, can shorten the tank’s life significantly.
3. Soil and Groundwater Conditions:
USTs are constantly in contact with the surrounding soil. Soil that retains moisture or contains high levels of salt or acidity can accelerate corrosion in steel tanks. Similarly, high groundwater levels can create hydrostatic pressure on the tank, increasing the risk of damage if the tank is empty or structurally weak.
4. Maintenance and Monitoring:
Regular maintenance is one of the most important ways to ensure a UST reaches its full expected lifespan. Leak detection systems, corrosion protection, periodic inspections, and proper recordkeeping are not just regulatory requirements; they are essential to the safe and efficient operation of your tank system. Tanks that go without inspections or required repairs are far more likely to fail prematurely.
5. Product Stored:
The type of material stored in the tank can also influence its longevity. Petroleum-based products can break down certain sealants and tank linings over time. Ethanol-blended fuels, in particular, can be corrosive to steel components and require additional precautions.
When Should a UST Be Replaced?
Even if a UST hasn’t developed a leak, replacement may be necessary once it nears the end of its expected life. Continuing to use an aging tank significantly increases the risk of environmental contamination and the financial burden of cleanup and legal liability. In New Jersey and Florida, strict regulations govern UST operation and removal, and failing to proactively address aging systems can lead to violations and fines.
Here are a few warning signs that a UST may need to be replaced:
- You’re operating a single-walled steel tank over 30 years old.
- The tank has a history of repairs or corrosion issues.
- Monitoring equipment shows signs of fuel loss or unexplained pressure changes.
- You are facing frequent compliance issues or inspection failures.
In most cases, property owners and operators are better off replacing an aging UST with a modern, double-walled system equipped with state-of-the-art leak detection. The upfront investment is significantly less than the cost of environmental remediation and regulatory penalties.
Planning for the Future With Lutz Tanks
If your underground storage tank is more than 20 years old, now is the time to start planning for replacement or removal. The team at Herbert Lutz & Company provides turnkey UST solutions, including tank assessments, regulatory compliance assistance, professional removal, and safe, efficient installation of new tanks.
We also work with property owners who are decommissioning their USTs—either because they’re switching to aboveground storage, transitioning away from petroleum-based products, or redeveloping a site for new uses. In these cases, timely removal and proper site remediation are key to protecting your investment and ensuring compliance with New Jersey and Florida environmental standards.
Trust Lutz for Long-Term UST Solutions
A UST is a major asset and responsibility. Whether you’re installing a new system, maintaining an existing one, or planning for removal and replacement, it’s important to work with a contractor who understands the full lifecycle of underground tanks. At Herbert Lutz & Company, we’ve helped countless clients throughout New Jersey and Florida manage their UST systems from start to finish—with safety, compliance, and long-term performance as our top priorities.
If you’re unsure about the condition or lifespan of your underground storage tank, contact us today for an evaluation. Let us help you make informed decisions that protect your property, your budget, and the environment.
