This operation is part of the list of 12 emergency operations agreed on 1 September 2014 when all stakeholders approved the plan to secure drinking water supply (PSAEP). Its purpose is to renovate and secure the Deshauteurs plant, which is an old drinking water treatment plant. The equipment is ageing, failing and unsecure. The consequence is that the storage tank of the usisne and very regularly at a low level. The distribution of water on the grid is therefore not guaranteed.