this contract concerns the realization of various extensions, urgent repairs, diversion, reinforcement and security of the network and drinking water works mainly (the works may be non-programmable).

As part of this work, extensions of the wastewater network can be carried out in common trenches including the installation of sheaths for telecommunications networks.

carrying out urgent work (pipe breakage or damage to installations due to bad weather or other accidents) or non-programmable work annually (extension, diversion or relocation of networks due to construction, network reinforcement for fire protection compliance, network mesh for the improvement of operating conditions).

As part of this work, wastewater network extensions can be carried out in common trenches if necessary