The problem of excessive raw water turbidity by example of the "Czaniec" reservoir

The article presents problems connected with the conditioning of water originating from the Soła river at the “Czaniec” Water Conditioning Station in Kobiernice. In the Soła river, as well as in other mountain rivers, the increased water turbidity appears in periods of snow thaws and during considerable rainfalls. The results of investigations into raw water turbidity concerning the years 2005–2009 were obtained from the water Conditioning Station in Kobiernice. On their basis the times of appearance and duration of increased turbidity were calculated. For the purpose of more effective water conditioning the change of coagulants applied at the station was proposed.