Compact filtration unit for swimming pool basin

A compact filtration unit for a swimming pool having a water basin, said unit including,

• a filtration compartment containing filtration means for receiving water from said basin and treating said water,
• a pumping compartment containing pumping means for drawing water from said filtration means and returning said water to said basin,
• said pumping compartment being mounted behind said filtration compartment and being connected at its upper section to an upper section of the filtration compartment by a passageway, said pumping compartment having a front wall that is separated from a back wall of the filtration compartment by a given distance whereby the compartments can straddle a wall of said basin with the passageway lying on top of said basin wall,
• a water-tight wall mounted in said passageway for preventing the passage of water from the filtration compartment into the pumping compartment,
• a delivery line passing through said water-tight wall for bringing water from said filtration means to said pumping mean,
• a supply line passing through said water-tight wall for returning water back to the basin,
• sealing means for providing a leak-tight joint between the delivery and supply lines and the water-tight wall,
• a duct compartment mounted adjacent to and in communication with the pumping compartment,
• each compartment having a top edge that lies in a common plane, and
• a removable lid for covering the compartments, said lid having a series of perforations over the duct compartment wherein the duct compartment is in communication with the surrounding ambient.