The most common bacteria division were Proteobacteria and the genus that are most common in the drinking water are: Gallionella, Delftia, Enterobacter, Sphingomonas and Streptococcus.
Algengasta bakteríufylkingin var Proteobacteria og þær ættkvíslir sem eru algengastar í neysluvatninu eru: Gallionella, Delftia, Enterobacter, Sphingomonas og Streptococcus.