However, biofilms are found on almost every submerged surface in treatment plants and distribution systems. In treatment, biofilms can be used to reduce the concentration of organic matter that forms disinfection by-products as well as produce biologically stable water that reduces biofilm growth in distribution systems. Biological filters do not appear to support the growth of pathogenic bacteria. Distribution system biofilms are deleterious, in that they can release indicator organisms, and heterotrophic bacteria, and may cause taste and odor problems. Control of these biofilms is difficult.
Disinfection alone is usually ineffective.
Reduction of organic matter, improved disinfection, and the implementation of corrosion control in unlined iron pipes are present, or a combination of these methods is helpful in controlling distribution system biofilms. Library Industry Connection Workplace Contact Webmaster Terms of Use Links marked by the 3-arrow sign take you to sites with content for which the CBE is not responsible.