Akther, M. S. R., & Tharani, G. (2017). Assessment of Water Quality Parameters and Determination of Water Quality Index of Tube Well Water in Vengalacheddikulam DS Division,Vavuniya District, Sri Lanka. International Journal of Sciences: Basic and Applied Research (IJSBAR), 32(3), 317–328. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7113