The Factors Affecting Safe Drinking-Water (Planning and Essay Basic)

1485 WordsMay 6, 20136 Pages
The factors affecting safe drinking water: Describe and explain the different factors effecting access to safe drinking water. (10 marks) Planning and Notes: * From 1996 – 2006 +/- 1.56 billion people gained access to improved drinking-water sources. * Today 87% people drink from improved water sources compared to 77% in 1990. Physical factors that affect safe drinking water: * Amount of precipitation * Seasonal distribution of precipitation * Physical ability of the surface area to store water E.g. Ethiopia pg 192 * Rate of evapotranspiration * Density of surface access points to water * Ease of access to groundwater supplies if they exist Human factors that affect safe drinking water: * The wealth of a nation…show more content…
Evapotranspiration is the water that is lost from the plants stomata. The faster plants lose water, the more water they require. If the rate of evapotranspiration is high, plants will grow their roots deep and absorb water from the ground, potentially depleting aquifer and/or lowering the water bed. This uses up a good sources of safe drinking-water. Density of surface access points to water is an important influence over drinking-water access. This is the density of the surface area of a country (or area) that has points at which safe drinking water can be accessed from. Countries with a high density will find that water access is easy, whereas countries with a low density may find that some people have to travel long distances, or may not have any access to water, as there are no water access points nearby. Alongside the density of surface access points to water, ease of access to groundwater supplies if they exist is very important. There may be groundwater supplies may be present but could be inaccessible. For example, the area could be covered with a layer of solid rock which cannot be bored through. Human factors that affect safe drinking water can be just as large of a problem as physical factors, if not a bigger problem. These factors are caused by human action, or lack of action. A very important factor is the wealth of a nation or region in terms of its ability to construct and maintain water

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