Abstract: A filter cleaning system with a cleaning chamber. The cleaning chamber has a container, a plurality of shafts and a plurality of nozzles inside of the container, and an outlet. The shafts extend along a length of the cleaning chamber and are configured to support a cylindrical filter. Each of the shafts is rotatable with respect to the chamber and is configured to cause the filter to rotate about an axis of the filter. The nozzles are positioned below the shafts and are configured to spray water upward toward a gap between the shafts. Each nozzle has a spray pattern comprising a flat fan pattern with a centerline. Each nozzle is oriented such that the centerline is nonparallel with the axis of the filter. The outlet is configured to drain recovery water out of the interior of the cleaning chamber.