1. Verordnung über Trinkwasser und über Wasser für Lebensmittelbetriebe (Trinkwasserverordnung-TrinkwV) vom 5;Anonymous;Bundesgesetzblatt,1990
2. Anonymous, 1998. European Drinking Water Directive (Council Directive 98/83/EC, on the quality of water intended for human consumption). Adopted by the Council on 3 November 1998. Official Journal L 330, 05/12/1998:0032-0054.
3. Waterborne outbreak of gastroenteritis associated with a contaminated municipal water supply, Walkerton, Ontario, May–June 2000;Anonymous;Can. Commun. Dis. Rep.,2000
4. Standard Methods for the Examination of Water and Wastewater,1995
5. A nested array of rRNA targeted probes for the detection and identification of Enterococci by reverse hybridization;Behr;Syst. Appl. Microbiol.,2000