What is a potential consequence of a malfunctioning heating oil tank?

A malfunctioning heating oil tank poses significant environmental risks, notably the potential contamination of soil and water. When a tank develops leaks or ruptures, heating oil can escape into the surrounding environment, leading to soil contamination. This can then pose serious threats to groundwater sources and surrounding ecosystems, making it a critical concern for public health and environmental safety.

The contamination may require extensive remediation efforts, adding financial burdens on property owners and impacting local water quality. As such, recognizing this risk is essential for both compliance with environmental regulations and the protection of natural resources.

In contrast, the other options describe positive outcomes that do not occur as a result of a malfunctioning tank. For instance, a malfunctioning tank would not lead to increased heating efficiency or improvements in system performance; rather, it would likely result in inefficiencies and potential system failures.