1. Bureau of Indian Standards (BIS). Specification for drinking water. New Delhi, India: Food and Agricultural Division Council; 2012.
2. Central Pollution Control Board (CPCB). Guide manual: water and waste water. New Delhi, India: Central Pollution Control Board; 2013. Available: http://www.cpcb.nic.in/upload/Latest/Latest_67_guidemanualw&wwanalysis.pdf .
3. World Health Organization (WHO). Guideline for drinking water quality. 2012.
4. Ochuko U, Thaddeus O, Oghenero OA, John EE. A comparative assessment of water quality index (WQI) and suitability of river Ase for domestic water supply in urban and rural communities in Southern Nigeria. Int J Human Soc Sci. 2014;4(1):234–45.
5. Tyagi S, Sharma B, Singh P, Dobhal R. Water quality assessment in terms of Water Quality Index. Am J Water Resour. 2013;1(3):34–8.