A private project to build a wastewater treatment plant in Peru's eastern Cajamarca region has attracted interest from Spanish and Israeli firms, state media reported.
The private initiative was declared of public interest last year, allowing investment promotion agency Cepri to open the project up to potential investors.
Spain's Obrainsa Keppel proposed building a biological treatment plant including an intake and sewerage network, with a total investment of US$35mn. A similar offer was presented by an Israeli company, state news agency Andina reported, without naming the company involved.
US-based G&R Enterprises also presented an offer but failed to comply with bidding rules, according to the report. The company proposed an investment of US$15mn, excluding intakes and sewerage networks.
The eventual winner must be approved by the municipal government, national sanitation authority Sunass, regional water utility EPS Marañon and Cajamarca city utility Sedacaj.
Cajamarca city currently treats 30l/s of the 250l/s of wastewater it produces, leading to heavy contamination of rivers, according to Cepri subsecretary José Pajares Abanto.