We bought a new home outside of the city with well water. Our water had the rotten eggs smell and would stain our toilets and clothes. The Culligans rep came out and suggested we add a chlorinator to kill any bacteria and help with the coloration. My wife didn't like the idea of chemicals in our children's water so they a great filter after the chlorinator that filtered the chlorine out as well. We spent about $2800 for this upgrade but you know what they say about happy wife- happy life. Just last week we were eating dinner and my wife said "We have the best water". If you have well water I highly suggest you call Culligans and ask for the system they installed for us - no more odor, tastes, or stained clothes.