Drinking water in so-called hitech Bengaluru city is highly contaminated and unfit for human consumption, studies have shown. Several studies on hundreds of samples have shown that the water is basically contaminated with eColi and Salmonella bacteria that lead to life threatening diseases. Even doctors agreed that 95 per cent of the drinking water supplied to households in Bengaluru is contaminated. Not just with pathogens, but water is also contaminated with chemical and metal residues, it is learnt. All these are leading to dangerous consequences.