1. Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption;The Council of the European Union;Off. J. Eur. Comm.,1998
2. Umwelt Bundesamt, Guidelines and Evaluation Criteria, Umwelt Bundesamt, Dessau-Roßlau, Germany, [updated 2017 Mar 23
3. cited 2017 Aug 29]. Available: https://www.umweltbundesamt.de/en/topics/water/drinking-water/distributing-drinking-water/guidelines-evaluation-criteria.
4. Federal Ministry of Health, Contents of the Drinking Water Ordinance, Bundesministerium für Gesundheit, BMG, Bonn, Germany, [updated 2016 May 27
5. cited 2017 Aug 30]. Available: https://www.bundesgesundheitsministerium.de/health/drinking-water-ordinance.html.