How much water should you drink a day

According to The U.S. National Academies of Sciences, Engineering, and Medicine about 15.5 cups (3.7 liters) of fluids a day. (Mayoclinic)
About 20% of daily fluid intake usually comes from food and the rest from drinks (Mayoclinic).
The average daily water for men is about 15.5 cups. (Harvard Medical School Special Health)
The average daily water for women about 11.5 cups. (Harvard Medical School Special Health)

How much water should I drink during pregnancy?

According to America College of Obstetricians and Gynecologists, during pregnancy you should drink 8 to 12 cups (64 to 96 ounces) of water every day. (ACOG)
During Pregnancy You should drink enough water a day so your pee is a pale, clear colour. You need to drink 6 to 8 medium (200ml) glasses of water or fluid a day, or 1.6 litres. (Tommy’s)

You should have 128 ounces (3.8 liters or 16 cups) of water a day. Try to drink a glass of water every time you feed your baby. You needn’t count your cups of water, but drink enough so that you rarely feel thirsty. You lose about 25 ounces of water in breast milk every day. (webmd)
As a nursing mother, you need about 16 cups per day of water, which can come from food, beverages and drinking water, to compensate for the extra water that is used to make milk. (eatright)

When working in the heat, drink 1 cup (8 ounces) of water every 15–20 minutes. This translates to ¾–1 quart (24–32 ounces) per hour. Drinking at shorter intervals is more effective than drinking large amounts infrequently.(CDC.Gov)
Do not drink more than 48 oz (1½ quarts) per hour! Drinking too much
water or other fluids (sports drinks, energy drinks, etc.) can cause a medical
emergency because the concentration of salt in the blood becomes too low. (CDC.Gov)

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