Because I've been swamped with work, prepping for moving to a new house, and working on a SEKRET PROJECT (to be revealed later), I'm posting this little informative offtopic vid link today.
I drink tap water. I don't put absolute trust in bottled, store-purchased water: it is only as safe as its source. I have a nice reusable metal water bottle sitting on my desk that is far cheaper than the plastic bottled stuff. For those curious, I studied Environmental Science in college. This included environmental engineering, groundwater flow, soils, plants, wetland mitigation, water treatment, and wastewater management, including tours of 3 different sets of water treatment and wastewater treatment plants.
And when I go backpacking and camping, I *certainly* don't drink straight from the filthy, polluted, wild streams and springs that the bottled-water companies claim they get their "pristine" water from. No, I filter and purify it so I don't end up with Giardia or worse. Deer Park? Reminds me of a time I found a dead deer laying in a mountain stream just up from where my hiking group had just purified some water. A fresh spring from the ground? Wanna know what people stick in holes on their farms or dump in the woods that filters down into that lovely groundwater? No, you really don't. Don't buy into those little logos and images of "fresh clean wild" water. We have water treatment plants for a very good reason.
I live in a country that has very strict regulations on its tap water. Things are monitored closely and constantly. It's as safe and sometimes safer than bottled water: I've visited my local water treatment plant, I know how they clean it, and I trust them to keep operations running smoothly. Yes, sometimes a problem comes up in some cities/regions, but same can be said for the sources of bottled water: there are reported cases of bottled water containing bacteria, viruses, and other contaminants as well. City water is more tightly regulated and monitored than bottled water.
If you live or travel in an area that does not have well-regulated water treatment, there are water purification techniques that can be done in the kitchen or over a campfire. Simply bringing water to a boil is enough to disinfect it; filter it with the standard water filters or even clean cloth to filter out particles.
Ultimately, I'd rather not deal with the higher cost, waste, and potential BPA problems of bottled water as much as I can help it. I will stick with my reusable bottle.