Szukana fraza: [Abstract = "Aluminium is one of the environmental factors that may have an impact on Alzheimer`s and Parkinson`s disease. Some epidemiological studies show a relationship between the concentration of aluminium in drinking water and the incidence of Alzheimer`s disease. The article presents and discusses the results of research on the effect of the type and dose of non\-prehydrolyzed aluminium coagulants on the concentration of residual aluminium in water intended for human consumption."]