title: A pilot study of bacterial regrowth in water pipelines.
abstract: Bacterial regrowth in water distribution systems results in deterioration of bacteriological quality of drinking water, as well as accelerated corrosion of the pipelines. The aim of the present study was to analyze the phenomena of colonization and bacterial regrowth in source water and in the water distribution systems of three distribution networks in the province of Catania (Sicily, Italy). The BART™ (Biological Activity Reaction Test) method was used, which is also capable of determining the potential aggressiveness of microbial species in water. We searched for sulfate reducing bacteria, iron-related bacteria, nitrifying and denitrifying bacteria, heterotrophic bacteria, slime-forming bacteria and fluorescent Pseudomonads. A high concentration of heterotrophic bacteria was found in almost every water sample analyzed. Sulfate reducing bacteria and iron-related bacteria were found in all three distribution networks, while non-fluorescing Pseudomonas were detected in source water of only one of the distribution networks. The BART™ method was found to be a practical and easy to use tool to detect the different bacteria groups involved in regrowth phenomena.
authors.affiliation: Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena, 299 Rome, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Mancini
authors.affiliation: Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena, 299 Rome, Italy.
authors.forename: Stefania
authors.initials: S
authors.lastname: Marcheggiani
authors.affiliation: Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena, 299 Rome, Italy.
authors.forename: Cinzia
authors.initials: C
authors.lastname: Grasso
authors.affiliation: Notified Body 0373, Istituto Superiore di Sanità, Viale Regina Elena, 299, Rome, Italy.
authors.forename: Cristina
authors.initials: C
authors.lastname: Romanelli
authors.affiliation: Department "G.F.Ingrassia", Hygiene and Public Health, University di Catania, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Mistretta
authors.affiliation: Department "G.F.Ingrassia", Hygiene and Public Health, University di Catania, Italy.
authors.forename: Marina
authors.initials: M
authors.lastname: Marranzano
mesh_terms: D001419:Bacteria / Q000145:classification / Q000254:growth & development* / Q000302:isolation & purification; D060766:Drinking Water; D010865:Pilot Projects; D012802:Sicily; D014867:Water; D014871:Water Microbiology; D014881:Water Supply
chemical_list: D060766:Drinking Water; D014867:Water