A singular combination irrigation apparatus may be used to combine the function of a regulator, valve, and filter into a singular combination, rather than merely connecting the three separate devices together. The irrigation apparatus may include a unitary manifold through which water may flow. This unitary manifold may include a valve-receiving portion and a filter-receiving portion. The valve-receiving portion is positioned upstream of the filter-receiving portion. The irrigation apparatus also includes a filter assembly removably secured to the filter-receiving portion. The irrigation apparatus further includes a valve removably secured to the valve-receiving portion. The manifold may also be manufactured or molded as a single, unitary piece.