2. The Tibitoc water production
plant, located in the suburbs
of Bogota, supplies almost
30% of the Colombian
capital's residents.
To be able to ensure
continuous water supply, it
was essential to rehabilitate
the plant without disrupting
production.

3. Rehabilitation of the plant and water mains
1.Rehabilitation works on the entire
treatment process (physical pretreatment, coagulation, flocculation, sand
filtration, neutralization, disinfection).
2.$22 million invested over three years. Two
thirds of the works were carried out by
Veolia Water Solutions & Technologies, the
Veolia Water subsidiary.
3.Temporary changes to the treatment
process to improve water quality while
waiting for the rehabilitation work to be
completed. Changes were made to the
preparation systems and quantities used of
chemicals (lime
milk, polymers, chlorine, coagulant).

4. 1)Rehabilitation over three years of
the Tibitoc water production plant.
Works carried out without
disrupting water supply to Bogota.
2)improved water quality:
compliance with all drinking water
quality parameters (for example,
quality of treated water went from
1.5 NTU at start of contract to less
than 0.5 NTU at end-1999).
3)Plant certified ISO 9002 in
November 1999, in compliance
with commitments made, and ISO
9001:2000 at end-2005.