Honestly, I wish I could do that. However, the tap water here is HORRIBLE. They pretty much just strain it to get the rocks out, then chlorinate it to death to kill all the wigglies. It's revolting, especially because the majority of the water infrastructure here is roughly 80 to 100 years old.
Then, all the local pollution doesn't help, being at the southern tip of Lake Michigan, with several of the local rivers and streams that discharge into the lake, quite near the filtration plants being little more than open sewers.
There are much better filters out there than simple one stage carbon jobs.
Check out Reverse osmosis and multi stage filters, they can literally filter soupy pond water thats downhill from a 3 hole outhouse and make it better than most bottled water is.