Water quality - Detection and enumeration of intestinal enterococci in surface and waste water - Part 1: Miniaturized method (Most Probable Number) for surface and waste water (ISO 7899-1:1998) (includes corrigendum AC:2000)
Water quality - Detection and enumeration of Escherichia coli and coliform bacteria - Part 3: Miniaturized method (Most Probable Number) for the detection and enumeration of E. coli in surface and waste water (ISO 9308-3:1998) (includes corrigendum AC:2000)