Article R2224-19-2 of the French General Code of Local Authorities
The collective wastewater treatment charge comprises a variable part and, where applicable, a fixed part. The variable part is determined on the basis of the volume of water taken by the user from the public distribution network or from any other source, the use of which generates the discharge of wastewater collected by the wastewater service. This volume is calculated under the conditions defined in articles R. 2224-19-3 and R….