GEP produces filters for greywater from bath and shower, in addition to the rainwater filters. The greywater is discharged to a collection tank. But first the greywater is filtered through a special mechanical filter, with the known Trident filter technology from GEP. These filters are equipped with automatic filter cleaners so that the efficiency remains optimal. The slightly contaminated greywater is then led to the greywater system where it is first biologically cleaned and then treated with a membrane filter. GEP produces such greywater filters in various designs, sizes and capacities. For industrial projects these are available up to a tube diameter of 500 mm.