What is often a key function of booster pumps in water distribution systems?

Booster pumps play a critical role in water distribution systems primarily by increasing the pressure within the system. This increased pressure is essential for ensuring that water can reach all areas of the distribution network, especially those that may be at higher elevations or farther from the source. Without adequate pressure, water may not flow effectively through pipes, leading to inadequate supply in certain areas or decreased firefighting capabilities.

In many scenarios, booster pumps are strategically installed in locations where the natural pressure from the water source is insufficient to meet the pressure requirements needed for service. By elevating the pressure, these pumps help maintain consistent water delivery to consumers and can also assist in managing fluctuations in demand throughout the system.

The other options, while also important functions in water quality and safety, do not pertain to the primary role of booster pumps. Supplying chemicals and filtering water relate to water treatment processes, and preventing contamination focuses on safeguarding water quality, which is achieved through different means in the distribution system.