Are you forgetful about it or do you not like water? 2 very different issues--for forgetting, keep a container of water with you at all times during the day.

If you don't like the taste, you can try several options--there are many different bottled waters, each with its own flavor, and there are flavored waters available, too... Hope this helps

I find buying 500ml bottles of water helps me because the water seems "fresher" to me and more like a treat. Also, it helps me to measure how much I'm having. I usually have one in the morning and then refill it 1 or 2 times during the day with regular filtered water from the container that I keep in the fridge.