Abstract: This paper provides an overview on the concept of closed loop sanitation systems. A brief outline has been given on existing sanitation facilities in India, ways to implement ecological sanitation and retrofitting of nutrient recovery systems into existing sanitation facilities. In recent times, though India has witnessed phenomenal development in water resources, access to adequate sanitation facilities remain one of its major development issues. Urine Diversion Systems as a sustainable sanitation alternative can help India move closer in achieving such goals.