Water Question.

[KathyZ1@aol.com]

I ride in So. Cal. and we ride high in the Santa Monica Mountains on fire 
roads where it can get hot and there simply is no water to be had.
Is there an efficient way to carry some water for horses??

We usually try to ride early in the morning, 8 am or later, 4pm.
So far we've been out around three hours at a stretch but we'd like to go out 
for longer training rides.
True, when we get back, the horses often don't even head straight for the 
water.....So maybe I'm worrying needlessly.
Nonetheless, I won't do anything to compromise the health of my horse...
I'm relatively new at long rides so any help is appreciated.

Those of you in desert areas.
What do you do about watering your horses when you're out for hours and hours 
training your horse and there's no water around???

Thanks,
Kathy