The army tapped into Lewistown’s water supply, but the base had its own water system. The pump house was critical to the safety of the base. Its massive pumping equipment provided accelerated water recharge for fire emergencies. The pump house not only housed a high capacity electric pump, but also a standby generator for backup power. The base water supply was also chlorinated here at the pump house. Like the elevated water tank, the reservoir capacity for its in-ground storage tank was 50,000 gallons. In addition to the pumping equipment in its single room, a built-in cabinet lies against the southeast wall. Inside the door, servicemen stationed at the base left their signatures and hometown addresses. A water treatment plant at the southwest corner of the base consisted of an Imhoff tank for the reception and processing of sewage. A trickling filter fed into a chlorinator house. Little visibly remains of this part of the system except a ring-like mound where the Imhoff tank once sat.