The Intermunicipal WWTP of Albufeira is located in the parish of Guia and serves the municipalities of Albufeira, Silves and Lagoa, and has an average daily flow of 28,119m³, equivalent to 133,900 inhabitants.

In the execution of this project, the PERI - RUNDFLEX PLUS formwork system was introduced, for the first time, in Portugal, for the execution of 3 large decanters.

It consists of a set of 15 lift stations. In the liquid phase it contemplates the stages of preliminary treatment, biological, physico-chemical and disinfection, and also has an additional filtration and disinfection stage for the production of service water.