presence of bacteria forming biofilm in water pipes commonly used at Puebla, México

A common problem in water distribution networks is the formation of bacterial biofilms inside them. The biofilm is a community of microorganisms which is embedded in a solid surface and it is the natural state in which the most bacteria are in the environment or infectious processes The biofilm formation is a dynamic and continuous process and it forms a complex microenvironment in the pipes. This process depends on several factors including materials from which pipes are made. So the drinking water has lost quality along its passage by supply pipes. The deterioration of water quality results in altering the taste and odor and sometimes the turbidity. In this study, the presence of bacteria forming biofilm in water pipes was determinated.