First world problems.
Namely, the taste of water. THE TASTE?!?!! Come on people. But let's say that you want to reduce your impact on the environment by drinking more tap water. Well some people insist on the pre bottled canisters. A pure marketing ploy if there's ever one. Now, get bottled water if you must, and most places in the world require it. However, in places like Calgary, drinking from the tap is one of the best sources of water. Yes, a Brita might get out a few more 'impurities', but when it comes down to it, it's not no bottles or a filter that helps, it's just drinking straight from the tap. We have the safest and cleanest water in the world. So really it all comes down to preference--we've been tricked into paying even more for cheap and clean water at our tap. Don't be rused, have a swig from the faucet.
Just don't do this: