1. Anitha, P., Charmaine, J. and Nagaraja, S. (2011) Evaluation of groundwater quality in and around Peenya industrial area of Bangalore, South India using GIS techniques. Environ Monit Assess. doi:10.1007/s10661-011-2244-y.
2. Arumugam, K. (2010) Assessment of Groundwater Quality in Tirupur Region, PhDThesis (Unpublished). Anna University, Chennai
3. APHA (1995) Standard method for the examination of water and waste water (14th Ed.) Washington D.C. Amer. Public Health Association, no.409A, pp.316–317.
4. BIS (Bureau of Indian Standard) (2009) 10500, Indian standard drinking water specification, Second revision, pp.1–24.
5. ESRIArc USER (2004) Spatial Interpolation July 2004). //http: www.esri.com acccesed 25 Oct 2011.