This paper investigate the plant water of 52 different conventional processed water plant in the eastern and central regions, and analyse the characteristics of water plants in different areas; survey the influence of the pond of waterworks flocculation, sedimentation tanks on the water consumption rate and the solids containing in the sludge; besides, research the influence of the type of waterworks filter pool and backwash conditions on the consumption rate of water and backwash effect; also, it analyse the rate of water plants which have had this water reuse process at this time.