Need information on water quality standards for cooling heat exchangers in Vasai, Mumbai, Maharashtra

I want to like to obtain information pertaining to the maximum limit of calcium, magnesium, sodium salts in industrial water used for the purpose of cooling heat exchangers. Our plant is based at Vasai, coastal area. Relevant standards may kindly be mentioned. We would like to ascertain if our current processes are matching required quality demands & adjust as needed if modifications are needed.

Pavan Malshe,
Engg Deptt, Raychem RPG Ltd (EOU),
Vasai ( East).
pmalshe@raychemrpg.com