Peru's Private investment promotion agency (Proinversión) has approved the final version of the concession contract for the design, financing, construction, operation, and maintenance of a wastewater treatment system for the Lake Titicaca basin, located in Puno, in the south-east of Peru. 

The receipt of technical proposals and economic offers from the bidders is pending until April 22 with the awarding of the project expected to be done by April 29. The approval of the contract took into account the opinions of the Ministry of Housing, Construction and Sanitation (MVCS) in its capacity as project owner and the Ministry of Economy and Finance (MEF) as the governing entity of the private investment policy. In addition, it included the recommendations and comments made by the Comptroller General of the Republic (CGR).

In December 2018, following five consortia have been pre-qualified for the bidding process:

• Aguas de Puno Consortium (Spain), formed by the Technical Desalination companies of Aguas SA Branch of Peru - Tedagua SA, and, Acciona Agua SAU
• Collas Consortium (France), formed by Veolia Servicios Perú SAC companies; y Construcción y Administración SA
• FCC Aqualia (Spain)
• Public Works and Services Corporation, COPASA, Branch of Peru (Spain)
• Consorcio Fypasa Construcciones SA de CV and Operadora de Ecosistemas SA de CV (Mexico), formed by the companies Fypasa Construcciones SA de CV; and Operadora de Ecosistemas SA de CV