Water supply and sanitation in Latin America

Water supply and sanitation in Latin America

Water supply and sanitation in Latin America is characterized by insufficient access and in many cases by poor service quality, with detrimental impacts on public health. Water and sanitation services are provided by a vast array of mostly local service providers under an often fragmented policy and regulatory framework. Financing of water and sanitation remains a serious challenge.


. WHO/UNICEF JMP sanitation [http://www.wssinfo.org/en/338_san_latino.html] ] Increasing access remains a challenge, in particular given the poor financial health of service providers and fiscal constraints on behalf of central and local governments.

As far as sanitation is concerned, only 51% of the population has access to sewers. Only an estimated 15% of the collected wastewater finds its way into wastewater treatment plants, which often are not properly functioning. [Pan American Health Organization/Division of Health and Environment: Regional Report on the Evaluation in the Region of the Americas, Washington, 2001, p. 24 and p. 81] 26% of the population has access to forms of sanitation other than sewers, including septic tanks and various types of latrines.

Water use

The per capita water use in Latin America varies greatly among countries, among cities in the same country, and between urban and rural areas, and obviously among those with a house connection, a public tap or no improved water source at all. The average net urban water use (i.e. excluding distribution losses) was estimated at about 240 liter/capita/day [ ADERASA Benchmarking report 2005, p. 22, based on a non-representative sample of 50 utilities of various sizes in 9 countries] , a level that is about as high as in the United States and almost twice as high as in Central Europe. The highest water use can be found in some utilities in Chile and Argentina, where water resources are abundant and water use is almost 500 liter/capita/day. [ Mendoza in Argentina, where there is less than 10% metering, and Aguas Cordillera in Chile ] The lowest water use is in Aguas de Illimani serving La Paz, the capital of Bolivia, with less than 50 liter/capita/day. In rural areas water use is sometimes even lower than this level.

Quality of service

Even for those having access to water supply, poor quality of service is often experienced, in the form of intermittent supply, low pressure and poor drinking water quality. However, differences in service quality between countries and between cities in Latin America are vast, and some service providers achieve a quality of service on par with developed countries.

Institutional responsibility

"See also List of responsibilities in the water supply and sanitation sector in Latin America and the Caribbean"

Service provision

Responsibility for water supply and sewerage service provision in Latin American countries is vested either in municipalities, or in regional or national companies. Foster, Vivien: Ten Years of Water Service Reform in Latin America: Toward an Anglo-French Model, World Bank, Water Supply and Sanitation Sector Board Discussion Paper Series No. 3, January 2005. [http://siteresources.worldbank.org/INTWSS/Resources/WSSServiceReform.pdf World Bank 2005 Water] ] Municipalities are in charge of water and sanitation service provision in Brazil, Colombia, Ecuador, Guatemala, Mexico and Peru. In some countries, such as in Colombia and Mexico, municipalities took over this responsibility from national service providers during the decentralization of the 1980s. Subsequently, especially the larger municipalities have often created specialized municipal (and sometimes inter-municipal) public utilities, whose finances are kept separate from the city's finances. While in most cases the companies are public, in a few notable cases they are mixed or private companies operating under concession, lease or management contracts. Chile and Venezuela are examples of countries that have created regional water companies; however, in the case of Venezuela, the United Nations reports that Venezuela remains one of the poorest in water service provision in this region. ["Appropriate Technology for Sewage Pollution Control in the Wider Caribbean Region", Caribbean Environment Programme Technical Report #40 1998 available online at [http://www.cep.unep.org/pubs/Techreports/tr40en/chapter5.html UNEP] ] State-level regional water companies also exist in all 26 states of Brazil, where they provide services on behalf of some (but not all) municipalities in each state. National public water and sewer companies, which have for the most part been created in the 1960s and 1970s, still exist in Costa Rica, the Dominican Republic, El Salvador, Haiti, Panama, Paraguay and Uruguay. About 90% of urban water and sanitation services in Latin America are provided by public entities. Many private concession contracts signed during the 1990s in Latin America have been either renegotiated or cancelled. The most notable cancellations include the concession for Aguas Argentinas in Buenos Aires, Argentina, and the concessions for Cochabamba and La Paz, Bolivia. Private and mixed companies, however, continue to provide services in many cities of Colombia, in most of Chile, some Brazilian cities, and in Guayaquil, Ecuador.

In rural areas, the provision of water services is usually the responsibility of community organizations (Juntas de Agua). While the infrastructure is funded primarily by transfers from the national governments, typically community labor and sometimes cash contributions are mobilized. When communities are associated in the choice of service level and other key choices, this instills a sense of ownership that makes it more likely that communities will maintain the infrastructure.

Policy and regulation

). Their functions vary and may include tariff approvals, monitoring of service quality and handling of complaints. Environmental regulation is entrusted to environmental agencies and the regulation of drinking water quality to Ministries of Health.

Supporting community organizations

Supporting the numerous community organizations that provide water and sanitation services in Latin America - mainly in rural areas - is a key public function that is often underestimated and neglected. Responsibility for this function, if it is defined at all, can be assigned to a government Ministry and its regional branches, a Social Fund or municipalities. Often NGOs also carry out this function, either on their own initiative and with their own resources, or under contract by the government.

In Honduras support to community organizations (Juntas de Agua) is entrusted to the Social Fund FHIS, in cooperation with a national agency for technical assistance in water and sanitation (SANAA). In El Salvador it is done by the Social Fund FISDL and various NGOs. In Peru it is carried out through NGOs and municipalities with the support of a national program (PRONASAR) implemented by the Ministry of Housing. In Paraguay it is the responsibility of a national agency in charge of promoting specifically water supply and sanitation in rural areas and small towns (SENASA). In Ecuador it is carried out under a national program (PRAGUAS) by consultants working for the Ministry of Housing. In Panama such support is provided by the Ministry of Health. In Haiti such support is provided by NGOs, some of which are under contract with the national urban water agency SNEP and its specialized unit for rural areas. There thus is a wide variety of institutional arrangements to support community organizations, so that one cannot speak of a uniform model for such support in Latin America.

Financial aspects


According to a 2006 World Bank study average water tariffs in Latin America are the highest of any region of the developing world. Tariffs are about four times higher than in South Asia, three times higher than in Eastern Europe and Central Asia and almost twice as high as in East Asia. However, tariffs are less than half as high as in OECD countries. Based on a sample of 23 major cities in Latin America the average residential water tariff for a monthly consumption of 15 cubic meter was US$0.41, equivalent to a monthly bill of only about US$6. [ Foster, Halpern and Komides, 2005, p. 21, drawing on data from the Latin American water regulator association ADERASA ]

Cost recovery

It appears that most utilities in Latin America recover more than their operating costs and thus generate surpluses to self-finance a portion of their investments. The average recovery coefficient of operating costs among a sample of 48 private and public utilities from 8 countries was 1.64. [ ADERASA Benchmarking report 2005, p. 42 ] The highest coefficients of more than 2 can be found in utilities in Chile, as well as in Pereira and Manizales in Colombia. [ The worst performing utilities had coefficients of less than 1. One should note, however, that the coefficient is calculated based on billed revenues and not on collected revenues. The latter are often much lower than the former, because a share of users does not pay its bills.]

Despite the ostensibly high levels of tariffs and cost recovery estimated based on the sample of utilities analyzed, utilities do not generate sufficient revenue to finance a substantial share of their investments internally, or to be credit-worthy enough to mobilize commercial, long-term credit. [ World Bank: Infrastructure in Latin America and the Caribbean. Recent Developments and Key Challenges, Washington DC, 2005. [http://web.worldbank.org/WBSITE/EXTERNAL/COUNTRIES/LACEXT/0,,contentMDK:20631899~pagePK:146736~piPK:146830~theSitePK:258554,00.html World Bank 2005 Infrastructure] ] The reasons include low levels of operational efficiency, as detailed further below, poor recovery of bills, poor procurement practices and political corruption.


There are few studies on the affordability of water and sewer bills in Latin America. The Pan-American Health Organization (PAHO) analyzed multi-purpose household surveys conducted between 1995 and 1999 in 10 countries to assess the share of household income spent on water supply services. [ [http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49892002000500013&lng=en&nrm=iso&tlng=en Rangel et al., Public Health 11(5/6), 2002] and especially [http://www.scielosp.org/img/fbpe/rpsp/v11n5-6/10723t3.gifTable on Household Expenditure] ] These data show that the expenditures on water vary between 0.4% of total expenditures in rural Panama to 3.0% in Kingston, Jamaica. For the households in the poorest income decile expenditures on water are higher, varying from 0.6% in rural Panama to 6.5% in Kingston, Jamaica. However, these figures have to be interpreted with caution. First, it is not clear how water expenditures were defined in the surveys. It seems that in some cases expenditures to buy bottled water and water from tankers were included, while in other cases they were excluded. Second, the sample includes both households with and without access to piped water systems. Therefore, especially in rural areas where coverage tends to be low, the shares are only a poor indication on the affordability of water bills. Third, it is not explicit if sewer bills are included in the analysis, although this is most likely the case, since sewer bills are always a surcharge on the water bill and are thus perceived by most households as part of their water expenditures.


The level of investment in water supply and sanitation in Latin America is tentatively estimated at 0.12% of GDP in the 1990s. [ Data used for "The effects of infrastructure development on growth and income distribution by Luis Serven and Cesar Calderon", Policy Research Working Paper #3400, 2004 [http://econ.worldbank.org/external/default/main?ImgPagePK=64202990&entityID=000012009_20040921105044&menuPK=64168175&pagePK=64210502&theSitePK=477872&piPK=64210520] These estimates may be somewhat on the low side, since they do not include investments from all sources, such as housing developers ] A large share of these investments is needed to maintain and rehabilitate existing infrastructure. However, the World Bank has estimated that the investments needed to increase access to achieve the Millennium Development Goals (MDGs) in water and sanitation in Latin America by itself is 0.12% of GDP, not taking into account maintenance and rehabilitation. [ Investing in Infrastructure – What is Needed from 2000 to 2010 ? Policy Research Working Paper # 3102 - by Marianne Fay and Tito Yepes- July 2003, Annex II, p. 18 [http://siteresources.worldbank.org/INTLAC/Resources/LAC_Infrastructure_annex2.pdf] ] It can thus be concluded that, on average, a significant increase in investments is needed to achieve the MDGs.


The modalities of financing water and sanitation infrastructure differ substantially between countries. Some countries that have reached higher levels of cost recovery, such as Chile and some utilities in Brazil and Mexico, rely on commercial credit financing. However, the vast majority of utilities relies on transfers from national governments. These can take various forms: In Colombia municipalities are legally entitled to receive transfers calculated through a formula based on their costs and poverty levels; in Mexico municipalities can apply for matching federal grants provided they fulfill certain conditions that vary by program; in Ecuador municipalities receive transfers based on a formula that takes into account their choice of management model and improvements in cost recovery; and in other countries utilities simply receive transfers that can vary from one year to the other without any conditions. The level of transfers from national governments is highly variable and often far from sufficient to increase coverage and improve service quality. Some countries pass loans from international financial institutions on to utilities in the form of credits. However, these international loans only account for a relatively small share of water and sanitation financing in Latin America.


There are wide differences in the operational efficiency among urban water and sanitation utilities in Latin America. The two most common measures of operation efficiency are labor productivity and non-revenue water (water losses). In terms of labor productivity, the most productive utilities have less than 2 employees per 1000 connections. They include EPM in Colombia, SEDAPAL in Lima, Aguas del Valle in Chile's 4th region, as well as Aguas de Formosa and Aguas de Salta in Argentina. [ ADERASA Benchmarking report 2005, p. 20, including a sample of 48 utilities from 8 countries ] The utility with the lowest labor productivity in the sample is EPSEL from the Lambayeque Region in Peru with more than 15 employees per 1000 connections. The average of the sample is about 5 employees per 1000 connections.

Concerning non-revenue water, the average of Latin American utilities in the sample considered is 40% and thus much higher than estimates of efficient levels, which vary between 15 and 25%. [ ADERASA Benchmarking report 2005, p. 23 ] The highest level (73%) is registered by Interagua, the utility serving Guayaquil in Ecuador. The lowest level of any larger utility with a high share of household metering, which is a precondition to accurately measure non-revenue water, is registered in Aguas Cordillera in Chile with 20%.

Strategy to improve services

The Millennium Development Goals (MDG) aim at halving, by 2015, the proportion of people without sustainable access to safe drinking water and adequate sanitation, from a base year of 1990. According to a 2006 World Bank brief, this is achievable for some countries in Latin America and the Caribbean, while it represents a mammoth task for others. According to the World Bank even those countries on track to achieve the MDG targets face tremendous challenges in improving service quality, in particular to attain continuity of supply and to increase wastewater treatment. To meet these challenges Latin American and Caribbean countries, according to the World Bank, would have to advance on several fronts, including:

*Improving the efficiency of service providers to allow them to generate more internal resources to cover costs and fund investment. This includes better collection of bills, reduction of administrative losses (clandestine connections, under-metering) and physical losses, better procurement practices, the use of low-cost technologies and a reduction of overstaffing.
*Increasing investments in water and sanitation from the current low level of 0.15 percent of GDP. Investment needs are estimated to exceed 0.2 percent of GDP.

*Introducing innovative mechanisms for commercial financing. This includes tapping domestic capital markets where feasible and the judicious use of guarantees and guarantee facilities, while managing contingent liabilities prudently.
*Targeting subsidies better and improving cost recovery. Implicit and explicit subsidies through low tariffs mostly benefit the better-off. Increasing tariffs is often a necessity. But in order to make this more equitable, such measures would have to be complemented by actions to enhance collection efficiency, reduce the incidence of illegal connections, increase the share of metered connections (see water meters), revise tariff structures and introduce means-tested subsidies where feasible.
*Expanding access to water and sanitation services, especially to the poor, while ensuring that these services are accessible, efficient, and sustainable. Low-cost technologies such as condominial sewers can play an important role in that respect, as can legalizing land tenure and finding innovative ways to provide services to those without land titles.
*Improving service quality. Without continuous supply, reliably good drinking water quality, and the prevention of sewer overflows, health is endangered andndash especially if customer service is poor and billing complaints not resolved swiftlyndash it is difficult to justify a higher degree of cost recovery.
*Strengthening the capacity of service providers. This is essential, especially given the high turnover of senior staff in municipal utilities as a result of frequent changes in municipal governments. It is important to make municipal service providers more autonomous, to insulate them as much as possible from political influence, and to provide training and a career path for utility employees.
*Redefining the role of the private sector in service provision. Private sector participation in water and sanitation in Latin America and the Caribbean has had mixed results. Some international operators have lost interest in the sector, sometimes citing governments’ failure to abide by contracts. However, local private operators continue to play a major role in the sector, helping to improve efficiency and service quality, especially if state supervision is adequate.
*Strengthening information systems and impact evaluations. Utilities often have only very limited information available on the quality of their services and their assets. Regulators and governments often have even less, and there are frequently only rudimentary data available on how projects and programs have influenced coverage and service quality. The strengthening of local and national information systems and impact evaluations is therefore a priority for the region.
*Improving regulatory frameworks. A regulatory framework that ensures that the interests of both the consumer and the investor are adequately represented is essential. However, experience with utility regulation (see economic regulation)in the region is sobering, given the limited autonomy and resources of many regulators, as well as the limited ability of many service providers to fulfill norms set by regulators. [cite web |url=http://web.worldbank.org/WBSITE/EXTERNAL/COUNTRIES/LACEXT/EXTLACREGTOPWATSUPSAN/0,,contentMDK:20791641~menuPK:855407~pagePK:34004173~piPK:34003707~theSitePK:855395,00.html |title=The World Bank and Water Supply and Sanitation in Latin American and the Caribbean. |accessdate=2008-02-29 |last= |first= |coauthors= |date=June 2006 |work=Water and Sanitation Topic Brief ( [http://go.worldbank.org/K1GWAAJMJ0 permanent url] ) |publisher=The World Bank Group]



* Foster, Vivien: Ten Years of Water Service Reform in Latin America: Toward an Anglo-French Model, World Bank, Water Supply and Sanitation Sector Board Discussion Paper Series No. 3, January 2005. [http://siteresources.worldbank.org/INTWSS/Resources/WSSServiceReform.pdf World Bank 2005 Water]

* WHO/UNICEF: Joint Monitoring Program (JMP) for Water and Sanitation at [http://www.wssinfo.org JMP]

* Pan-American Health Organization (PAHO)/Division of Health and Environment: Regional Report on the 2000 Evaluation in the Americas - Drinking Water and Sanitation. Current State and Perspectives, Washington DC, 2001. [http://www.bvsde.paho.org/bvsaas/e/fulltext/infregio/infregio.pdf PAHO 2000]

* Rangel Soares, Luiz Carlos et al.: [http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49892002000500013&lng=en&nrm=iso&tlng=en Inequities in access to and use of drinking water services in Latin America and the Caribbean, Public Health 11(5/6), 2002]

* World Bank: Infrastructure in Latin America and the Caribbean. Recent Developments and Key Challenges, Washington DC, 2005. [http://web.worldbank.org/WBSITE/EXTERNAL/COUNTRIES/LACEXT/0,,contentMDK:20631899~pagePK:146736~piPK:146830~theSitePK:258554,00.html World Bank 2005 Infrastructure]

External links


*The World Bank on water and sanitation in Latin America [http://www.worldbank.org/lacwater World Bank]
*The World Bank's Water and Sanitation Program (WSP) for Latin America [http://www.wsp.org/regions/region.asp?id=3 WSP LAC]
*The Inter-American Development Bank (IDB) on water and sanitation [http://www.iadb.org/topics/Home.cfm?topicID=OS&parid=2&language=English IDB]
*WHO's Panamerican Sanitary Enginnering Center - Centro Panamericano de Ingeniería Sanitaria y Ciencias del Ambiente (in Spanish) [http://www.bvsde.paho.org/cepis/e/cepisacerca.html#cepis CEPIS]
*WHO's 2000 Water and Sanitation Regional Evaluation: Information by Countries (in Spanish) [http://www.bvsde.paho.org/eswww/eva2000/infopais.html]
*PAHO's water and sanitation information system - Sistema Interamericano de Información en Saneamiento Ambiental - Componente de Agua Potable y Saneamiento (in Spanish) [http://www.cepis.org.pe/sisamcep/ SISAM]
*ADERASA - The regional network of water and sanitation regulators [http://www.aderasa.org ADERASA]
*The Central American water and sanitation network [http://www.rrasca.org/ RRASCA]


Information Systems
*Bolivia - National Water and Sanitation Information System [http://www.sias.gov.bo/ SIAS]
*Brazil - The national water and sanitation information system [http://www.snis.gov.br SNIS]
*Colombia - Public Services Information System [http://www.sui.gov.co SUI]

*Costa Rica - The national water and sewer utility Instituto Costarricense de Acueductos y Alcantarillados [http://www.aya.go.cr/HTML_GENERAL/home.htm AyA]
*El Salvador - The national water and sewer utility [http://www.anda.gob.sv ANDA]
*Haiti - The national water company in charge of small towns and rural areas [http://www.snephaiti.com/ SNEP]
*Nicaragua - The national water and sewer utility [http://www.enacal.com.ni/index.htm ENACAL]
*Panama - The national water and sewer utility [http://www.idaan.gob.pa/ IDAAN]
*Uruguay - The national water and sewer utility [http://www.ose.com.uy/ OSE]

*Bolivia - [http://www.sisab.gov.bo/sisab2/index.php SISAB]
*Chile - [http://www.siss.cl/ SISS]
*Colombia - [http://www.cra.gov.co/portal/www/index-100.jsp CRA]
*Honduras - [http://www.ersaps.gob.hn/ ERSAPS]
*Panama (multi-sector) [http://www.ansp.gob.pa/default.asp ANSP]
*Paraguay - [http://www.erssan.gov.py/ ERSSAN]
*Peru - [http://www.sunass.gob.pe/ SUNASS]

Other Entities
*Honduras - The national water and sewer company in charge of providing technical assistance to municipal service providers, SANAA [http://www.sanaa.hn/ SANAA]
*Mexico - The National Water Commission [http://www.cna.gob.mx CNA]
*Paraguay - The national entitiy in charge of supporting water supply and sanitation in rural areas and small towns [http://www.senasa.gov.py/ SENASA]

See also

* Water management

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