1. Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption;EU;Off. J. Eur. Commun.,1998
2. Guidelines for Drinking-Water Quality;WHO,2011
3. US-EPA, National Drinking Water Regulations, 2009.
4. Council Directive 2006/118/EC of 12 December 2006 on the protection of groundwater against pollution and deterioration;EU;Off. J. Eur. Commun.,2006
5. Council Directive 91/271/EEC of 21 May 1991 concerning urban waste-water treatment;EU;Off. J. Eur. Commun.,1991