How Much Water Should You Drink Each Day? Guidelines for Women and Men

How much water should you drink a day? For most healthy adults, 2.0 l of total water per day for women and 2.5 l for men is a useful reference point. That doesn’t mean you have to drink that much from a bottle: coffee, tea, other drinks, and water from food all count too. Your needs may increase in hot weather and during exercise.

How much water should you drink a day according to recommendations?

The amounts of 2.0 l for women and 2.5 l for men are recommendations for total water, not just plain water. The European Food Safety Authority (EFSA) gives these values for adults in moderate temperatures and activity levels. They’re a reference point, not a strict limit or a personalized prescription for everyone.

The drinks column assumes that roughly 80% of your water comes from drinks and the rest from food. This is an estimate, not a separate required drinking goal. The amount of water in your diet depends, among other things, on how many vegetables, fruits, soups, and dairy products you eat. Use the water needs calculator to estimate how much to drink based on your weight, workouts, and the weather.

Does only plain water count?

No. Tea, coffee, milk, and soup also count toward your fluid intake. Water is a convenient everyday choice, but you don’t have to get your entire recommended amount from plain water. Coffee provides fluids too, although it’s worth keeping an eye on how much sugar or syrup you add.

Food also contains water. Cucumber, tomato, watermelon, fruit, yogurt, and a bowl of soup can all help you get more. If you eat plenty of these foods, some of your daily water intake is already on your plate—though it’s difficult to calculate precisely without knowing your full diet.

Alcohol isn’t a good way to stay hydrated. Sweetened drinks count as fluids too, but for everyday hydration, it’s better to choose water or drinks without much sugar more often.

When do you need more fluids?

Your needs increase mainly when you lose more water. This can happen in hot weather, during intense exercise or physical work, and when you have a fever, vomiting, or diarrhea. Humidity, clothing, how long you’re active, and how much you sweat also matter.

For a regular walk or a short workout, you don’t always need to plan an extra, specific serving of water. Keep some nearby and drink when you feel thirsty. During longer exercise in hot weather, sip small amounts while you’re active and afterward, rather than waiting until you feel very thirsty.

There’s no single number of liters that works for every workout. If you exercise for a long time and sweat heavily, it’s worth adjusting how you replace fluids to the duration and conditions. Don’t try to drink a large amount all at once either—drinking too much in a short time can be dangerous.

How can you recognize dehydration?

Common signs include thirst, dry mouth, urinating less, and darker urine. You may also feel tired or have a headache or dizziness. These symptoms aren’t always caused by dehydration, so consider the weather, your activity, and how you feel overall.

Pale yellow urine often goes along with good hydration, but color alone can’t give you a definite answer. Some foods, supplements, and medications can change its color. Older adults may feel thirst less strongly, so it’s worth paying attention to regular drinking and overall health too.

Confusion, fainting, very little urine, or being unable to keep fluids down are signs you shouldn’t wait out. Seek urgent medical help, especially if the symptoms started during hot weather or an illness.

How can you drink more water every day?

If you often don’t remember to drink until the evening, you don’t have to start carrying a huge bottle everywhere. A few simple habits can help:

• Keep water where you can see it—on your desk, in the kitchen, or in your bag.
• Have a few sips when you get up and with meals.
• Bring a bottle when you go for a walk, to work, or to a workout.
• If you don’t like plain water, add a slice of lemon or a few mint leaves, or choose unsweetened tea.
• Eat vegetables and fruit regularly, and sometimes have soup with lunch.

You don’t have to track every glass down to the milliliter. For a few days, notice when it’s easiest to remember to drink and what helps you keep a routine. If you like keeping track of things like this, EatSee lets you track water in the app—explore EatSee features.

Can you drink too much water?

Yes. Drinking very large amounts in a short time can disrupt your body’s electrolyte balance. The risk is especially relevant if someone forces themselves to drink water during prolonged exercise, ignoring thirst and conditions. You also don’t need to make up for a whole day by drinking several large glasses just before bed.

For most healthy adults, a good place to start is drinking regularly, responding to thirst, and taking the weather and your activity level into account. If you have kidney disease, heart disease, or another condition that requires you to limit fluids, take medication that affects fluid balance, are pregnant, or are breastfeeding, discuss your fluid intake with a doctor or dietitian. In these situations, general guidelines do not replace personalized advice.

This article is for informational purposes only and does not replace advice from a doctor or dietitian. Written by the EatSee editorial team. Editorial policy.