Adapting urban water resources management to climate change with private sector participation

Project description

Title: Adaptation of water resources management in urban areas to climate change with private sector participation
Commissioned by: German Federal Ministry for Economic Cooperation and Development (BMZ)
Lead executing agency: National Water Authority
Country: Peru
Overall term: 2014 to 2019

Lima and the river Rimac © GIZ / Samuel Schroers


The densely populated desert region on the Peruvian coast depends directly on the ecosystem of the Andes for its water supply. As a consequence of climate change the Andean glaciers are melting and there is greater variability in the volume of water flowing in the rivers. Excessive use of available water reserves is increasingly causing water shortages. The biggest impacts are on the rivers flowing toward the Pacific Ocean, especially the Rimac, Chillon and Lurin rivers and their catchment areas.


With the involvement of private sector actors, water resources management practices have been adapted in the Chillon, Rimac and Lurin river basins to accommodate the impacts of climate change.


GIZ is assisting the Peruvian National Water Authority in improving its management of the Chillon, Rimac and Lurin river basins. The project brings together private and public sector actors and non-governmental organisations in a joint effort to preserve the water resources of the catchment areas, which are the sole source of water for the capital city, Lima. On behalf of the German Federal Ministry for Economic Cooperation and Development (BMZ), GIZ is providing technical assistance, while encouraging knowledge transfer and promoting the concept of public-private stewardship. The project is working together with all stakeholders in the Greater Lima area, with a focus on cooperation with the private sector. It is receiving support from the consulting firms AMBERO and GITEC in this process.

  • Development partnerships with the private sector. The project works together with private businesses to reinforce their motivation to protect water resources. In a spirit of corporate social responsibility, they act as guarantors of water quality and availability. The companies are also a source of sustainable financing for a number of climate change adaptation projects, which benefit both the companies themselves and the general public.
  • Observatory. In collaboration with the relevant private and public sector actors, the project is supporting the establishment and operation of a water resources observatory. This will improve the availability of data for integrated water resources management in the river basins, and foster a deeper understanding of the impacts of climate change on water management.
  • Reuse of treated wastewater. Together with Lima’s water and sanitation authority, SEDAPAL, the project is working to identify possible ways of recycling treated wastewater, in particular to irrigate urban parks.
  • Awareness-raising strategy. The project supports its private sector partners, as well as SEDAPAL and the provincial and local governments in drafting climate change adaptation plans for water resources management. These plans are intended to help integrate the concept of adaptation in their activities to a greater degree and to focus attention on the issues at stake.


As a first step in setting up a water resources observatory, an organisational model that reflected the diverging expectations of the participating stakeholders was developed in cooperation with private and public sector partners. The observatory for the Chillon-Rimac-Lurin river basins was established on this basis in July 2016.

Initiatives were agreed and implemented with two companies on the conservation of water resources in cooperation with municipal governments. Treated wastewater from the Esmeralda Corp company is being used to irrigate 12 parks and green areas in the San Juan de Miraflores municipality, which is suffering from severe water stress.

Peru. Park. San Juan de Miraflores © GIZ / Paloma Maturana

The project has organised a large number of events jointly with non-governmental organisations and platforms for corporate social responsibility. The events have substantially raised the level of interest, awareness and commitment of many industrial companies located in the Greater Lima area with regard to the challenges of water resources management in times of climate change.