to get rid of chlorine, just aerate and expose to sunlight for 24 hours.. for chloramine, i've seen some info that shows vitamin c will take remove them - well.. not remove, but break down.. 1000 milligrams for 50 gallons of water - it's not supposed to affect ph, but i'd still be careful and check after treatment
Mary - I'd stay away from Vitamin C or L-ascorbic acid. Acids will lower pH. I have a system in my basement and I've been using a BMS water filter. See link.
I found one at Amazon for $95 dollars. It simply hooks to your hose facet and then you connect a hose at the other end. It's rated for 25K gallons/use. You should check it out. Let me know if you have any other questions.