You save more money by buying your own water filter and filter you own water, and the quality is just as good or better than the bottled water you buy at the store, it’s all a scam.
We have a reverse osmosis drinking water unit. Pays for itself, that’s for sure. Bottled distilled water has 0 ppm contaminants on our water tester, and the RO water runs around 12 ppm. Tap water is very iron-rich and 185 ppm.