so i bought an RO filter system. my city water is alright for making beer, but i wanted to make it better. so i bought this kit
http://www.amazon.com/Hydro-Logic-31035-100-GPD-Stealth-RO100-Reverse/dp/B002JLACGK/ref=sr_1_9?ie=UTF8&qid=1452016171&sr=8-9&keywords=ro+water+filter+system
So...