Originally Posted by Ganja Magic

The smartest thing to do is to save your water bottles, keep them clean, and fill up at the campus water fountains. The 0.5 micron filters on the fountains is better than Brita and you can be 99.9% sure that there aren't any unsavory organisms making their way past the filters. Keep about 10 bottles and fill up every weekend. You'll have plenty of clean filtered water for the week.