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

Booster pumps play a crucial role in water distribution systems primarily by increasing the pressure within the system. This is essential for several reasons. When water moves through the distribution network, friction and elevation changes can reduce the pressure, making it difficult to deliver water effectively to consumers, particularly in elevated areas or at great distances from the water source.

By enhancing the pressure, booster pumps ensure that water can reach its intended destination—be it homes, businesses, or fire hydrants—at adequate flow rates to meet demand. This is particularly important during peak usage times or in scenarios requiring high flow, such as firefighting.

The other choices refer to functions that are not the primary role of booster pumps. Supplying chemicals is typically done through separate chemical feed systems, filtering water is handled by filtration systems, and preventing contamination is managed through appropriate water quality measures, such as maintaining adequate pressure to avoid backflow.