Fig. 1From: Experimental rat model for acute tubular injury induced by high water hardness and high water fluoride: efficacy of primary preventive intervention by distilled water administrationGeographical distribution of water hardness, ground water fluoride and CKDu patients in Sri Lanka. a Distribution of fluoride in ground water in Sri Lanka (Source: Chandrajith et al.; 2012) b Ground water hardness variation over Sri Lanka (Source: National water supply and drainage board, Sri Lanka; www.waterboard.lk) c Distribution and prevalence of CKDu in Sri Lanka (Source: Jayasumana et al.; 2014)Back to article page