No. In fact it is worse in a lot of cases. Purified water (essentially
filtered tap water) lacks the minerals present in regular spring, ground, or
tap water. If you want to drink bottled water, make sure it is natural spring
or ground water or has had minerals added back into the water after
purification.
Bottled water is very expensive, especially if you need to drink 64 ounces
or more a day. Tap water is practically free. Plus it has the added bonus of
fluoride, an added mineral (done by the municipal water system) which protects
your teeth from cavities.
Water is the miracle pill (well, drink) that the world has been searching
for. Drinking enough is not hard to do, especially after you begin to notice
how good it makes you feel. Cheers!