UNESCO defines sanitation as "Maintaining clean, hygienic circumstances that help avoid disease through services such as waste collection and waste water removal". Sanitation essentially looks at controlling all the possible factors in the environment that surrounds us, that could threaten society's survival or development.
Sanitation is a term generally used with respect to health and undertaken in order to protect oneself from disease or illness. It could imply a number of things such as: the timely and correct disposal (or recycling) of waste. Sanitation systems gain even more importance as far as water supply and sewage discharge is concerned.
Sanitation and cleanliness go hand in hand, but today have come under a lot of cloud in most of the under-developed countries. The root cause for this is the fact that these places suffer not only from over population and over crowding issues, but also that they lack the basic funds and infrastructure required to build an effective sanitation model.