Article L1331-10 of the French Public Health Code
All discharges of non-domestic wastewater into the public sewerage system must be authorised in advance by the mayor or, where responsibility for sewerage at the point of discharge has been transferred to a public institution for inter-municipal cooperation or to a mixed syndicate, by the president of the public institution or mixed syndicate, after receiving an opinion from the public body responsible for wastewater transport and treatment and for downstream…