If you get a bottle of mineral supplement, you can make your water taste like dasani or any of those others - it only takes a few drops, and a four dollar bottle of the mineral supplement lasts about 6 months.
After having lived in Northampton, I no longer drink tap water. Northampton would send annual reviews of the water quality in which they admitted the the number of nasty things in the water exceeded regulations. They followed that paragraph with another that stated that no adverse effects had been found for the past so many years in people who were consuming the water.
Now I filter everything. Price for a filter pitcher: $15 CDN. I am still spending a heck of a lot less than if I bought a $2.59CDN bottle of dasani. I used to drink dasani by the case until I discovered that the minerals are the same as in the supplement.