Background: Water with high concentration of minerals is hard water. Water is essential for life. But water with very high degrees of hardness is harmful to health.: Four samples of packaged water samples were Material and Methods collected from kalyani area, West Bengal and tested by using EDTA titrimetric method with indicator and electrochemistry (non-indicator) principle.Out of all the samples tested majority of them Results and discussion: shows moderately hard character and single sample water as soft water character. Also from the experiment calcium and magnesium content has been determined.These studies Concludes that there is a differences in Conclusion: between all the parameter in respect to all the brands and also in the case of inter study except in magnesium content for two brands all the other brands having different value.
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