El Salvador is a country located in Central America with a population of almost 7 million. Despite being a relatively small country, El Salvador's topographic variation endows it with 3 distinct of climatic zones: the Pacific region, the Central region, and the Mountainous region. These zones vary in temperature corresponding with their altitude – the Pacific region is the hottest due to its low elevation, the Central region is located on a temperate plateau, and the mountains have generally low temperatures. This topographic and ecological diversity generate important challenges in water management.
A rich source of information for measuring the current state of access to water and sanitation are household surveys. Throughout Latin America and the Carribean, household surveys provide us with representative data of the countries' population, validated by statistical institutes, which allow cross-checking with other social statistics such as area, income, and gender breakdowns.
This page relies heavily on El Salvador's 2020 Multipurpose Household Survey which surveyed 10,900 representative households. It collected data on water and sanitation in accordance with the WHO / UNICEF guidelines. This survey is one of the few in the region that makes it possible to correctly estimate most of the SDG 6.1 and 6.2 indicators.
For more information on why OLAS uses household surveys, click here.