The paper presents the investigations concerning membrane treatment of water containing chloroform. Reverse osmosis (RO), nanofiltration (NF) and ultrafiltration (UF) techniques were applied. Removal degrees of chloroform and flux drop during membrane filtration were determined. Basing on the results of flux-time relationship, two models for flux drop have been adapted: resistance model and Hermii model. It was stated that RO, NF and UF could be used for THMs removal from water and the proposed models are suitable to describe the change of permeate flux during membrane filtration.