Untreated human excreta is a health hazard. It contains various disease causing micro organisms. It causes pollution of soil and water including the underground water. Thus, it contaminate the sources of water from which people collect water for drinking and household purposes. When this contaminated water is used for drinking, it cause disease such as cholera, typhoid, hepatities, dysentery, etc., which may even lead to death.

Untreated human excreta contains many pathogens and disease causing microbe like cholera, diarrhea, typhoid, polio, meningitis, hepatitis etc. The germs of these diseases can easily reach human population through air, water or insects and through contaminated food and water. Thus, untreated human excreta are a health hazard.