The aim of this action is to improve the quality of the waters of the Pontevedra Ria, and to comply with the EU’s requirements for discharges and purification. All discharges in the area between Samieira (Poio) and Montalvo (Sanxenxo) will be collected by means of an interceptor collector and transported to the Paxariñas WWTP (Sanxenxo). This WWTP will have to be extended, while a new submarine emissary will be built to replace the current one of Montalvo. A pumping and drive station will be built in Raxó, a new pumping station will be executed in Areas and the corresponding drive to connect to the interceptor will be remodelled the Portonovo general collector, and the pumping stations of Sanxenxo and Espiñeiro (Portonovo) will be adapted, the new Edar de Paxariñas and a new submarine emissary will be built in the Montalvo area.