Water intended for human consumption is regulated by Legislative Decree No. 31 of 2 February 2001 (in force since 25 December 2003), which absorbs the provisions of the Directive of the European Union 98/83/EC regarding the quality of water for human consumption into the national legislation (Presidential Decree 236/88). "Water intended for human consumption must be wholesome and clean. It must be free from any micro-organisms and parasites and from any substances which, in numbers or concentrations, constitute a potential danger to human health." The law regulates all the organoleptic, microbiological and chemical aspects from a health point of view and the management processes linked to the water supply. It sets the maximum acceptable limits of concentration.