1. United Nation, Department of Economic and Social Affairs, Population Division, World Urbanization Prospects: The 2014 Revision (2014).
2. World Health Organization, & UNICEF, Progress on Sanitation and Drinking-Water (2013).
3. World Health Organization, & UNICEF, Progress on Sanitation and Drinking-Water (2010).
4. CPCB, Directions Under Section 18(1)(b) of the Water (Prevention and Control of Pollution) Act, 1974 Regarding Treatment and Utilization of Sewage. (Central Pollution Control Board, 2015).
5. GOI, Environment (Protection) Amendment Rules 2017. (Gazette of India, 2017), pp. 843.