The method describes the qualitative determination of faecal streptococci in mineral, spring and table water using single-strength azide-dextrose broth (in accordance with Annex 2, point 2b of Section 4 (3) of the German Mineral and Table Water Ordinance of 1 August 1984, as amended on 5 July 2017 and ASU Section 64 LFGB L59.00-2 1988-05).
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Membrane filtration (MF) and immersion of the filter in single-strength azide-dextrose broth (corresponds to the methods in Annex 2, point 2b of Section 4 (3) of the German Mineral and Table Water Ordinance [1] and ASU Section 64 LFGB L59.00-2) [2].