Indian bottled water manufacturers are to go to the Ministry of Food Processing for clarification on the ISI mark, which becomes mandatory in 10 days time.

Bisleri, Coca-Cola, Pepsi and Nestle are all believed to want clarification on various issues including the fate of non-ISI marked bottled water available when the notification period lapses on March 29.

"Bottled water has a shelf life of six months and there will be stocks in the market without the ISI mark after the notification period," Ramesh Chauhan of Parle Bisleris told India's Business Line.

He said that the bottled water industry was making a representation, in the next couple of days, to the Ministry of Food Processing, which would, in turn, take up the case with the Ministries of Health and Consumer Affairs.

Chauhan also claims that some of the indications from the notification were contradictory. "The notification makes it mandatory for the packages to be transparent and clear. However, the materials allowed by the notification, like polyethylene and polycarbonate are not transparent and hence, it is contradictory."

Water manufacturers pointed out that they are not asking for an extension of the notification period, but for clarification on certain issues raised.