Abstract: A power generation device configured to be operably coupled to a plumbing component for a water treatment system wherein the present invention is operable to provide electrical current to a power component of the water treatment system. The present invention includes a housing having a wall defining the interior volume thereof. The housing includes an inlet opening and an outlet opening located on opposing sides of the housing. Disposed within the interior volume of the housing is a first valve and a second valve. The first valve is a pressure reducing valve and the second valve is a bypass valve. A power generation member is disposed within the interior volume and is fluidly coupled with the first valve that provides operation thereof through control of water flow direction within the housing. The second valve provides water flow through the housing providing a mode without power generation by the present invention.