중남미

The project has been soundly designed and engineered after several years of technical and economic studies which considered alternative solutions. It consists of the construction of tunnels to remove sewage and rain water run-off from the Mexico City metropolitan area by gravity flow. It includes: two interceptor tunnels, one 25 km and the other 27 km long, both with diameters increasing from 4 to 5 m, laid about 40 m below the ground, which would join to discharge into one central outfall tunnel, 47 km long, 6.5 m in diameter, laid about 100 m below the ground, which would discharge into the Salto River and the Requena Reservoir