I've posted several times about my efforts to drink enough water. I've always been terrible at it, to the point I'd end up dehydrated with a headache. Water just doesn't interest me, unless I'm exercising or really hot. I've tried giving myself a 'target' of a certain amount of water to drink a day, but I usually end up with a whole lot of water to drink just before I go to bed - not ideal! I've also tried drinking water with slices of lemon or lime or even mint in it, but the novelty wears off pretty quickly.
What I've been doing lately is a bit unusual, but it's been working for me. When I was doing a lot of interval training I bought a Gymboss timer
Instead of using the timer for intervals, I'm currently using it as a buzzer to remind myself to drink water. Every 15 minutes it goes off and I have a sip of water. I've been doing it for a couple of months now, and I've actually started to anticipate when it's time to drink - my mouth starts to get a bit dry just before the 15 minutes is up! My hydration levels are much better, my hair isn't as dry and my skin is softer.