The loan is now worth 158bn pesos (US$86.7mn), having been extended by 40bn pesos. Findeter also increased the term of the loan to 20 years from 15 years, with a three-year grace period.
The project aims to secure potable water supply to Santander department's Bucaramanga, Floridablanca and Girón districts for the next 25 years.
Work includes the construction of a 17.6Mm3 reservoir that will provide an additional 1,000l/s to the city water system and a potable water treatment plant.
Funding for the initiative is also coming from the national, Santander and Bucaramanga governments, which are providing a combined 25% of the project's total cost.