Owners of properties subject to the obligation to connect to the public wastewater collection network in application of article L. 1331-1 may be required by the municipality, the Lyon metropolitan area, the public inter-municipal cooperation body or the mixed syndicate with jurisdiction over collective sewerage, to pay a contribution towards the financing of collective sewerage, in order to take into account the savings they have made by avoiding the need for an individual regulatory drainage or treatment facility or the upgrading of such a facility.
However, when in a concerted development zone created in application of article L. 311-1 of the town planning code, the developer bears all or part of the cost of building the public wastewater collection network included in the public facilities programme for the zone, the contribution towards the financing of collective sanitation is reduced in proportion to the cost thus borne.
This contribution amounts to a maximum of 80% of the cost of supplying and installing the installation referred to in the first paragraph of this article, less, where applicable, the amount of reimbursement due by the same owner in application of article L. 1331-2.
The contribution provided for in this article is payable from the date of connection to the public wastewater collection network of the building, the extension to the building or the redeveloped part of the building, where this connection generates additional wastewater.
A decision by the municipal council, the council of the Lyon metropolitan area or the deliberative body of the public body determines how this contribution is calculated.
In the event of the creation of a new commune, the deliberations concerning the methods for calculating this contribution that were in force on the territory of each former commune are maintained for the year in which the new commune is created.