ISI no more Mandatory, affected segment : 2 = Consumers

It's consumers who ultimately drink the bottled water. How will the decision to make ISI voluntary, affect this segment ?

The consumers are divided into 3 sub-segments :-

Those who directly buy it from a shop & drink :-

These are travellers mainly who buy bottles from open market. They just say/call it "Bisleri" and just know that it's bottled water. Most of them are not even aware that there is something called ISI. At the most, if they know or made aware that it's licensed through fssai, it should be sufficient for them. 

Those who buy it at a cafe/restaurant/hotel :-

These people too, don't know actually whether bottled water needs ISI ( majority of them ). They can also be made aware. Not much effect.

Those who don't buy, but drink it inside their work-place/event etc.

Unless the host is particular, there won't be any resistance from consumers. 

20 Ltr Jar buyers who consume water on monthly basis, mainly corporates/ institutions 

There is more chance that these consumers will insist for ISI ( at least 50% of them ). Logic : No😇

The "Cold-Jar" water consumers

There is no difference, and the suiers of such water are expected to negatively use this govt decision.

What Happens to the actual quality of water supplied in light of this decision ?

If the producers, thmselves are particular about providing the best water, ISI cost is negligible. And the quality will continue to be delivered In absence of the Mandatory tag , the quality will certainly detoriate.