Which of the following is a common component of fixed water supply systems?

A common component of fixed water supply systems is storage tanks. These tanks are crucial for ensuring that an adequate supply of water is readily available for firefighting operations. They serve as a reservoir where water can be stored and accessed quickly during emergencies, which is essential for effective fire suppression efforts at airports. Having a reliable and substantial volume of water in storage tanks helps fire rescue teams respond promptly to incidents, addressing potential fire hazards effectively.

While water filtration systems, heat exchangers, and reservoirs may play important roles in broader water management, they are not universally recognized as a primary component of fixed water supply systems specifically for fire rescue. Water filtration systems focus on purifying water but are not typically integral to the immediate firefighting response. Heat exchangers are used in systems that require temperature regulation, but they do not supply water directly to firefighting efforts. Reservoirs can store large quantities of water, but they function differently from the contained, accessible solutions provided by storage tanks specifically designed for rapid response during emergencies.