Need help sourcing information on water hardness levels in various large/medium towns across India for market research projects

Sirs,

For use in connection with market research projects, we are consolidating information on the levels of water hardness in various large/medium towns across India. Can you kindly guide us on how to source this information?

Yours sincerely,
Rajarshi Dastidar,
Project Management Director IMRB International
10th Floor, 11 Shakespeare Sarani, Kolkata 700071
Phone - 033 4400 6200; Mobile - 098309 57099

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