The first concession was granted in 1993 to Aguas de la Costa itself a subsidiary of the French firm Suez .
Aguas de la Costa is a Uruguayan firm which later became majority - owned by Aguas de Barcelona .
The first concession was granted in 1993 to Aguas de la Costa , a Uruguayan firm which later became majority - owned by Aguas de Barcelona , itself a subsidiary of the French firm Suez .