The amount of water a person needs depends on factors like the weather, exertion and where you live. The body is made up of 60 percent water, so it is vital to carry nutrients to cells and remove toxins through the kidney. Even mild dehydration can make you feel exhausted. On average, your husband should consume about two to three liters of fluid a day. If he has a good diet with fruits and vegetables, note that they contain fluid that counts. Keeping bottled water with him can help ensure hydration throughout the day. Adding lemon or lime to water can also help get him in the habit of drinking more. Tea, juice and water all count as healthy fluids.
When you are well hydrated, the urine is colorless. It is healthy to produce about 1.5 liters of urine a day (seven cups) and less than that means you (or in this case, your husband) are probably not drinking enough water.