title: Metal leaching in drinking water domestic distribution system: an Italian case study.
abstract: The objective of this study was to evaluate metal contamination of tap water in seven public buildings in Brescia (Italy). Two monitoring periods were performed using three different sampling methods (overnight stagnation, 30-min stagnation, and random daytime). The results show that the water parameters exceeding the international standards (Directive 98/83/EC) at the tap were lead (max = 363 μg/L), nickel (max = 184 μg/L), zinc (max = 4900 μg/L), and iron (max = 393 μg/L). Compared to the total number of tap water samples analyzed (122), the values higher than limits of Directive 98/83/EC were 17% for lead, 11% for nickel, 14% for zinc, and 7% for iron. Three buildings exceeded iron standard while five buildings exceeded the standard for nickel, lead, and zinc. Moreover, there is no evident correlation between the leaching of contaminants in the domestic distribution system and the age of the pipes while a significant influence is shown by the sampling methods.
authors.affiliation: a Department of Civil Department of Civil Engineering, Architecture, Land, Environment and Mathematics , University of Brescia , Brescia , Italy.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Sorlini
authors.forename: Francesca
authors.initials: F
authors.lastname: Gialdini
authors.forename: Carlo
authors.initials: C
authors.lastname: Collivignarelli
mesh_terms: D003252:Construction Materials; D060766:Drinking Water / Q000032:analysis* / Q000592:standards; D004784:Environmental Monitoring / Q000592:standards; D006798:Housing; D007558:Italy; D019216:Metals, Heavy / Q000032:analysis* / Q000592:standards; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000592:standards; D014881:Water Supply / Q000592:standards
chemical_list: D060766:Drinking Water; D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: corrosion; distribution system; metals leaching; tap water