Which strategy helps optimize water supply when multiple hydrants are available?

• A. Connect all hoses in series.
• B. Use only the closest hydrant.
• C. Increase pump speed to maximum immediately.
• D. Use parallel connections where feasible, monitor flows to avoid overloading any single hydrant, and adjust pump settings to meet combined demand.

Answer: (D)

When several hydrants are available, the goal is to provide enough water to meet the combined demand while keeping pressures safe and the system balanced. Using parallel connections lets multiple hydrants contribute at once, which spreads the load and reduces the friction losses you’d get if water had to flow through a single path. That approach increases the total available flow and helps maintain usable pressures at all outlets.

Monitoring flows as you work prevents overloading any one hydrant or the distribution mains. Each hydrant and line has a rated capacity, and pushing too much through a single point can cause pressure drops elsewhere or equipment stress. It also helps you detect when one source is bottlenecking the system so you can adjust.

Adjusting the pump settings to meet the combined demand ties it together. By fine-tuning discharge pressure and pump speed, you match the overall supply to what the parallel hydrants can deliver, avoiding overpressure or under-delivery.

Connecting hoses in series would add more head loss and reduce pressure at the outlets, while using only the closest hydrant wastes available capacity. Pushing the pump to maximum without control can cause surges and equipment stress. The parallel, monitored, and coordinated approach provides the most reliable, balanced water supply when multiple hydrants are involved.