What is a common issue that can occur if proper support is not provided during a tap of an existing pipeline?

When tapping an existing pipeline, proper support is crucial to maintaining the integrity of the system. If adequate support is not provided during this process, one common issue that can arise is leakage.

This occurs because the tapping process can introduce stress to the pipeline. Without sufficient support, the pipeline may shift or bow, which can create gaps or weaken the joints and connections. These changes can lead to the development of leaks where water escapes from the pipe, which not only contributes to water loss but can also lead to environmental contamination and increase the risk of pressure drops.

In contrast, while pipe degradation, pressure loss, and air contamination are significant concerns within water systems, they are not as directly linked to the act of not providing support during a tap. Pipe degradation typically results from long-term factors such as corrosion or environmental conditions, pressure loss might result from other issues in the system, and air contamination is usually related to improper sealing or venting. Therefore, the most immediate and direct consequence of inadequate support during a tap is indeed leakage.