Peru - Water and Sanitation
Peru - Water and Sanitation
Due to its desert location, Lima faces major challenges in terms of water supplies and sanitation. At present, more than one million inhabitants have no access to clean drinking water, and around 1.5 million are not connected to a sanitation system. Only 15 per cent of waste water is purified, while the rest is simply dumped in the Pacific without any prior treatment. The cholera epidemic which struck in the 1990s along the Pacific coast of South America was caused to a large degree by the coastal waters which were polluted with waste water.
The public water supply company Sedapal has set up an ambitious investment programme which aims to provide water supplies and sanitation for the growing population. At the same time, the consequences of climate change which have already been predicted - including glacial melts and more irregular rainfall in the Andes - also need to be taken into account. In order to be able to meet these challenges, KfW Entwicklungsbank is taking part in the attempts to improve water supplies and sanitation in Lima and to establish sustainable usage of water resources. At the start of 2010, KfW provided the Peruvian Government with a first promotional loan for this purpose. The second one is set to follow in 2012.
Continuous Water Supplies for Slum Settlements
In particular, the aim is to provide inhabitants of the slum settlements which have emerged on the mountainsides with access to water supplies. In addition, drinking water reservoirs are to be moved to the higher-altitude areas. "As well as establishing continuous water supplies in these areas for the first time, this will allow us to let gravity do some of the work so that we can reduce the required pumping capacity", explains Joschka Greve, project manager at KfW Entwicklungsbank. "This will also allow us to reduce energy consumption".
As there is virtually no rainfall in the region, the water supplies to the city are predominantly fed from the nearby Andes. Glacial shrinkage in the mountains will place an additional strain on water management in the region. Against this background, water savings and loss reductions are key elements of the water supply.
At present, the existing, severely outdated pipe systems suffer water losses of up to 40 per cent. This means that the resource water, which is already very scarce, is being used very ineffectively. "With the funds made available, Sedapal aims to renew the pipe systems in order to reduce technical water losses", adds Greve.
Recycling Purified Waste Water
In addition, a great deal of work needs to be done in the field of waste water purification. KfW is helping Sedapal to design and finance the necessary infrastructure for partial recycling of purified waste water. Purified water is used for example for the irrigation of open spaces or to top up groundwater levels. This protects the scarce water resources of the city.
|Sector||Waster Supply / Wastewater Disposal|
|BMZ programme numbers||2020 96 592|
|FC funds in EUR million||50.0|
|KfW funds in EUR million||--|
Last updated: July 2012