The government is a silent spectator while people are tricked into drinking bottled mineral water, at prices ranging from Rs 10 to 15 a bottle, without knowing the mineral and preservative contents. A public interest litigation filed in Delhi High Court has said this, citing results of a research conducted by the Consumer Education and Research Society, Ahmedabad. Ten of the 21 samples of mineral water examined had failed the tests. Floating particles were found in five brands.