Water resources are mainly surface and groundwater.
Examples of surface water resources are rivers, lakes, reservoirs, seas and oceans. They are used for many purposes such as drinking, irrigation, industry and recreation. The uses of groundwater and surface water are adversely affected when the water quality deteriorates as they cannot then be supplied for their main purposes. As an example, polluted water bodies cannot be used to supply urbanized areas or for industries. Similarly, polluted beaches cannot be used for swimming because the water quality might place in risk public health.
Groundwater and surface water should therefore be protected from pollution. This is usually done by proper collection, treatment and disposal of the wastes.