Biodiversity in drinking water distribution systems:a brief reviewJ.C.BlockauthorI.SibilleauthorD.GatelauthorD.J.ReasonerauthorB.LykinsauthorR.M.ClarkauthorIn drinking water distribution systems, three groups of living organisms are usually found in the biofilm and circulating water: heterotrophic bacteria, free-living protozoa, and macro-invertebrates. Indirect evidence suggests that protozoa grazing in distribution systems can partially eliminate biomass production and accidental microbiological pollution. This paper examines the biodiversit in drinking water distribution systems.BiologyLimnology1997Freshwater Biological AssociationBook Section