Abstract: The method is used for performing a cleaning operation on a water filtration device having an inlet, a concentrate outlet, a permeate outlet, a filtration membrane between the inlet and the permeate outlet, the filtration membrane filtering water under pressure during a filtration operation of the water filtration device, and a recirculation line leading from at least one of the concentrate outlet and the permeate outlet back to the inlet. The method generally has a step of performing the cleaning operation including recirculating a solution along the recirculation line, the solution having at least water and one cleaning agent, the step of recirculating including maintaining a circulation of the solution along the entire length of the recirculation line.