Municipalities must set up monitoring of wastewater collection systems and treatment plants with a view to maintaining and checking their efficiency, on the one hand, and the environment receiving the discharge, on the other.
An order of the ministers responsible for health and the environment lays down the technical procedures by which monitoring is carried out :
a) The efficiency of wastewater collection;
b) The efficiency of treatment of this water in the treatment plant;
c) The receiving waters for treated wastewater;
d) The by-products resulting from wastewater collection and treatment.
The results of the monitoring are communicated by the municipalities or their delegates to the water agency and to the prefect, under the conditions set by the decree mentioned in the previous paragraph.