Population: Approx. 150,000
Level del Study: Final design
Location: Babahoyo - Prov. Los Ríos
Date Consultancy began: October 1991
Date Consultancy ended: August 1992
Total Contract Amount: USD $ 1,331,536
Name of associated firms: Association CES (Germany)/ASTEC-HIDROESTUDIOS-ICP-ACSAM
Customer: National Housing Board (currently MIDUVI)

Babahoyo, capital of the province of Los Ríos, is a city on Ecuador’s coast with nearly 150,000 inhabitants. It is located on a major floodplain that has traditionally been seriously affected by heavy rainfall. Further, basic services are insufficient, which exposes the public to health problems and making the city unattractive for local and national investment.

ASTEC, along with the other consulting firms that took part in this association, made the final designs, tender documents, and inspection of construction to provide the city of Babahoyo with the basic social infrastructure to consolidate and develop as a city so its people can live reasonably.

Characteristics of the components of the designs constructed to date:
  • Flood Control: Raising the banks of the San Pablo and Babahoyo Rivers, the Lagarto Estuary and the by-pass connecting with the highway to Guaranda, encircling the city in a sort of basin.
  • Water supply: Field of four deep wells producing 80 l/s each in the operational phase; conduction line; treatment plant with high reserves with a 500 m3 capacity and low reserves with a 3600 m3 capacity; line to the city over a hanging bridge to cross the Babahoyo River, and distribution networks.
  • Sanitary sewerage: This system has a main collector 4 km long, secondary collectors and a tertiary system collecting from each residence. The main collector transports sewage to the treatment plant, comprising six anaerobic upward-flow reactors, and 6 hectares of purifying ponds. After treatment the water is discharged into the Babahoyo River. The resulting sludge is dried on drying beds.
  • Rainwater drainage: The drainage system allows rainwater to flow away from the city by gravity. Main and secondary collectors, street drains, gutters, troughs and sumps have been built, as well as five strategically located reservoirs and pumping stations, with a total capacity of 8 m3/s.

ASTEC @ 2009