Method of maximizing resin utilization and optimizing reverse osmosis performance to polish an aqueous or radwaste fluid. The pair of turn lights include a right turn light and a left turn light in a spaced relationship. The pivoting movable clamp arm pivots with respect to the fixed clamp arm and the pressure spring provides for resilient closure of the clamp. The actuator may be in communication with the controller, the actuator operative to move the door from the closed position to the partially open position in response to the control signal. The shower system also includes a basin having a first channel sized to receive a lower edge of the enclosure such that the enclosure is configurable with respect to the basin in at least one functional arrangement.