The Untreated human excreta is a health hazard. It pollutes soil and water sources including groundwater. Groundwater is a source of water for wells, tube wells, springs and many rivers. When this polluted water is used for drinking, it can cause water-borne diseases including cholera, typhoid, polio, meningitis, hepatitis and dysentery.

Therefore, lack of sanitation resulting in drinking of polluted water can cause health problems.