1. Water Quality Parameters Bangladesh Standards & WHO Guidelines;BGS-DPHE,2017
2. Indian Standard Drinking Water Specifications IS 10500:1991;BIS,2003
3. Indian Standard Drinking Water Specifications IS 10500:2012;BIS,2012
4. Groundwater Quality in Shallow Aquifers of India;CGWB,2010
5. Assessing heavy metal contamination in Sado Estuary sediment: An index analysis approach;Caeiro;Ecol. Ind.,2005