Through this rectangular mouth, the dirty surface water is sucked in by the pump and fed into the filter circuit. The skimmers, the inlets, the bottom drain, and the vacuum are called fittings parts. This pipework is, for private pools, generally made of PVC with a diameter depending on the pump flow rate. It is all the pipes and equipment in the pump room that allows the pool water to be filtered and treated for a healthy swimming experience. We detail here the different equipment that make up what is called a pool filtration system. as they will be designed precisely in the installation layout drawing. The goal of a filtration diagram is only to understand the filtration concept for that reason, such it doesn’t mention exact pipes’ layout, etc. It shows schematically all the equipment selected and the way they are connected. The swimming pool plumbing diagram shows how to connect the various components of the swimming pool filtration system: swimming pool pump, filter, water disinfection, heating, etc.