Figure 12From: Are interventions to reduce the impact of arsenic contamination of groundwater on human health in developing countries effective? A systematic review Percentage (95% CI) of samples meeting WHO guidelines for ion exchange technologies. FH, ferric hydroxide[45]; Resins, bucket of resins [45]; CP, catalytic precipitation [45]; ArsenX1 – ArsenX3, ArsenX for single and split columns [50].Back to article page