All of the water delivery is gravity fed. We live on the slope of an alluvial fan. Water is pumped as/if necessary to the various reservoirs, but from there the

All of the water delivery is gravity fed. We live on the slope of an alluvial fan. Water is pumped as/if necessary to the various reservoirs, but from there they rely on water drop for delivery. The tank may well have two sets of pipes to service the closest homes, some closer to the surface with others buried deeper(assuming those homes are even serviced by that tank). But I’m less than a quarter mile away and well below the bottom of the tank. It’s steeper here than it looks. They say they can move water from anywhere to anywhere in the system through a combination of pumps and gravity, but all consumer delivery pressure is gravity based. The water pressure at someone’s house is based on their distance in height from their servicing reservoir. If they were to move water from the lowest part to the highest, it would take 8 lifts of the water. Electricity is a significant expense to the system so minimizing pumping, for any reason, is a priority for them. An interesting trivia bit is that, according to them, where our system has 8 lifts, the CA aqueduct has a total of 11 in its system.