Electrolysis of water under dynamic conditions and successive filtration substantially reduces the amount of iron ions in the solution. Specific work decreases if the concentration of iron ions in the initial solution is increased; if the current intensity is increased, the amount of iron ions is reduced, but the specific work of the process increases. Iron removal using electrolysis method significantly improves microbiological condition of the treated water if it contains at least 1mmol/L of chlorine ions. In water treated with electrodialysis during five days there is no development of colony forming units of bacteria Pseudomonas fluorescens. It is possible to efficiently desalinate solution. In the desalinated water there is a marked decrease (up to 1500 times) in intensity of development of colony forming units of bacteria Pseudomonas fluorescens.