Paragraph 2 F1

for Escherichia coli and coliform bacteria—

for enterococci, European standard EN ISO 7899-2:2000 entitled “Water quality - Detection and enumeration of intestinal enterococci - Part 2: Membrane filtration method (ISO 7899-2:2000)”;

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for colony count 22 °C (the enumeration of culturable microorganisms — colony count after aerobic incubation at 22 °C), European standard EN ISO 6222:1999 entitled “Water quality - Enumeration of culturable micro-organisms - Colony count by inoculation in a nutrient agar culture medium (ISO 6222:1999)”;

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for Clostridium perfringens including spores, European standard EN ISO 14189:2016 entitled “Water quality - Enumeration of Clostridium perfringens - Method using membrane filtration (ISO 14189:2013)”

for somatic coliphages, European Standard EN ISO 10705-2:2000 entitled “Water quality — Detection and enumeration of bacteriophages — Part 2: Enumeration of somatic coliphages” and European Standard EN ISO 10705-3:2003 entitled “Water quality — Detection and enumeration of bacteriophages — Part 3: Validation of methods for concentration of bacteriophages from water” can be used.