I also felt this with my recent 14 day fast but it took about ten days for me to start not liking the water. I started reducing the amount I was taking in and was taking only about 750 mls by the 14th day. If I had of kept going I would have kept reducing the amount. On my longest fast of 30 days I had only one glass of water a day and that was plenty. I also dry fast regularly and for me find that just as safe as Water Fasting and believe that if our bodies are rejecting the water then it's time to have a break from the water too. My introduction to fasting research started with learning a lot about dry fasting so I am pretty confident about it. If you choose to go that way yourself I suggest finding all the information you can about it first. I recently did a google search on dry fasting and found quite a few useful hits on it so the information is out there.