Am I mire thirsty because I've been drinking a lot of water?

For the last month or so I've been drinking a lot of water, like at least 3 water bottles everyday, and I find now that when I don't have water for a little while i feel very thirsty, and before I drank a lot of water the period of times between water drinks could be a lot longer and I wouldnt feel thirsty. So am I more thirsty because I've come accustomed to drinking so much water?