NEBOSH Practice Test

When water is stored under pressure, what is a potential risk associated with it?

1. Freezing During Winter

2. Leaking at Low Pressure

3. Potential for Bacterial Growth

4. High Calcium Content

The correct answer is: Potential for Bacterial Growth

When water is stored under pressure, the potential risk associated with it largely revolves around the possibility of bacterial growth. Under certain conditions, water can become a breeding ground for bacteria, especially if it is not regularly treated or if the storage environment lacks proper sanitation measures. High-pressure storage can create an anaerobic environment where certain types of bacteria thrive, potentially leading to health hazards if the water is later consumed or comes in contact with individuals. While other risks like freezing in winter, leaking at low pressure, and issues related to high calcium content might pose concerns in different contexts, they do not directly relate to the risks presented specifically by water being stored under pressure. Freezing is more about temperature rather than pressure, low-pressure leaks are typically not a severe issue in the context of pressurized systems, and high calcium content deals with water chemistry rather than microbial concerns, which can endanger health. Therefore, the potential for bacterial growth is a significant and relevant risk when dealing with pressurized water storage.