A hydraulic ram, or hydram, is a cyclic water pump powered by hydropower. It takes in water at one "hydraulic head" (pressure) and flow rate, and outputs water at a higher hydraulic head and lower flow rate. The device uses the water hammer effect to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started. - https://en.wikipedia.org/wiki/Hydraulic_ram
This is pumping water from the bore hole that is situated about half way up the hill, it is syphoning down to the bottom of the hill where the pump is situated, and being pumped to the tanks as the top of the hill for storage and processing.