I have a really good water filter system under my kitchen sink... It pulls about 99% of whatever is in the water, out. With the town water (from the regular faucet) I can smell chlorine, and taste it sometimes too (others say it's fine, or don't taste it, but I do)... With the filtered water, it tastes clean, has zero chlorine odor, and is just plain good. It's a two stage filter system, so the first catches a lot, and the second catches even more.
With my filter setup, it comes out to about 4 cents a gallon that's run through the filters. Far cheaper than buying bottled water. I think the system cost me about $100 back in 2001, and a few more dollars to get it professionally installed.
If you're going to be brewing any amount, or don't like the taste of the water coming out of the faucet, I suggest looking into a two stage water filter for under the sink. You could also go for a RO unit, but that might be over-kill for the job at hand (and be more expensive)... Just make sure that you get a system that is by a company that's been around a while, and has survived the recent economic turmoil well. I have to order my filters online, since no stores in my area carry them. Still, pretty cheap money all things considered.
