In a water distribution grid, which component supplies hydrants and blocks of consumers?

• A. Distributor
• B. Main
• C. Feeder
• D. Branch

Answer: (A)

The main idea is that water distribution networks are built in levels, with the distributor sitting between the feeder and the branches. The distributor’s role is to take water from the feeder and deliver it to hydrants and blocks of consumers, serving as a mid‑level feeder that ensures adequate flow and pressure for groups of buildings and for firefighting needs. Hydrants are placed on this distributor so they can draw high, reliable flows without overloading the smaller branch lines.

The main is the large trunk line from the source; its job is bulk supply outward. The feeder brings water toward the distribution area and feeds the distributor. The branch lines then extend from the distributor to individual consumers, not typically handling hydrants or large blocks of customers.