Works related to ad hoc sewerage networks in the department of Orne until 2015

Works on sewerage systems, also known as “singular points”, which can alter the flow or quality of the water transported. — thunderstorm weirs, discharge or lifting stations, storm basins... which are equipment altering the flow to the treatment plant and which can generate direct discharges to the natural environment;- points of introduction into the network of non-domestic wastewater (industry, farm, etc.). This type of spill is subject to special discharge authorisation;- discharge points in another community’s system;- points equipped for effluent control.