Nearly one third of the high quality water in households is used for flushing toilets. Water resources in Poland are relatively poor. Therefore the use of water of inferior quality parameters to flush the toilet bowls is satisfactory. It is possible to use for this purpose the greywater from the washing of the body (the bath water) after treating it to the level which doesn’t threatens human life or health. The paper presents preliminary results of research on potential use of cartridge filter to treat greywater from the washing of the body (from bath) in order to reuse water in households. It was found not significant effect of increasing the quality of bath greywater treatment using polypropylene and carbon cartridge filters.