Article R1321-1 A of the French Public Health Code
The sufficient quantity of water intended for human consumption within the meaning of article L. 1321-1 A is, depending on the situation of the persons concerned, between fifty and one hundred litres of water per person per day available in the home or in the place where the persons concerned live or, failing that, at the nearest possible point of access, taking into account the technical, geographical and topographical constraints…