The Parkson DynaCanter™ is a floating style decanter used to remove supernatant from the upper portion of the basin. The decanter utilizes a flex joint to allow vertical articulation as water levels move between high and low water levels. The decanter collects supernatant from below the water surface to preclude foam, scum, or other floatables. A series of machined orifices are provided in the decanter draw tube to collect supernatant from multiple points in the basin. A standard open / close valve is used in the discharge piping to control flow rate through the decanter. No electromechanical components are used inside the basin making operation and maintenance convenient for the operator.