Enquiries are what take place when the stuff produced is not on par with the desired qualities and the service delivery department hence gets involved for the customer-supplier relationship to stay clean.
Water is a natural resource that cannot be taken in as is from the supplies because it contains a lot of things that are basically harmful for our health and the ones around us as well (because some illnesses need the victimised to stay away from others).
One more reason why water suppliers are preferred over tap-water is that some producers have recently come up with a very brilliant idea of making these water-bottles with not only pure, but artificially flavoured H2O compounds! This makes it easy for the water filling machine manufacturer to run their business on full-scales and the parents to serve more liquids to their kids. It is actually a medically proven fact that kids grow healthier when they drink better water in the specified quantities.