Drink at least eight 8-ounce servings of water each day.
The more active you are, the more water you need to replenish lost fluids.

Don’t wait until you’re thirsty to drink water.
By the time you feel thirsty, you have probably already lost two or more cups of your body water composition.

Drink plenty of water throughout the day.
Convenience is a must, so carry water with you as you commute to work, run errands or enjoy a day at the beach. While at work, keep water at your desk, and take a water break rather than a coffee break.

Don’t substitute beverages with alcohol or caffeine for water.
Caffeine and alcohol act as diuretics and can cause you to lose water through increased urination.

Once you start exercising, drink water throughout your workout.
Keep water with you and take frequent water breaks.

Don’t underestimate the amount of fluids lost from perspiration.
Following exercise, you need to drink two cups of water for each pound lost.

Start and end your day with water.
Your body loses water while you sleep, so drink a serving before bed and again when you wake up.

Common colds and the flu frequently lead to dehydration.
Keep water next to your bed so you can sip it throughout the day without having to get up.

Cool water – not carbonated beverages or sports drinks – is the best fluid for keeping hydrated when it’s warm outside.
Cool water is absorbed much more quickly than warm or hot fluids and may help to cool off your overheated body. If you’re going to be away from home or outdoors, make sure you keep water close by.

Make sure your children drink enough water.
Children need water to balance their intake of other beverages – especially during their activities. Packing water in a child’s lunch instead of juice or regular soda can also help prevent childhood obesity.
© 1999 - 2004 IBWA (International Bottled Water Association)

There is more information on water and how important it is to your health.