How much water should I be drinking?

As a society, we often hear the mantra “drink eight glasses of water a day” as a way to stay hydrated. However, the truth is that the amount of water an individual needs can vary greatly depending on factors such as age, sex, activity level, and overall health. So, how much water should we really be drinking to stay properly hydrated?

According to the National Health Service (NHS), adults should aim to drink about 1.2 to 1.5 liters (or 6-8 glasses) of water per day. This can include water, tea, coffee, and other non-alcoholic drinks. It’s important to note that during hot weather or when engaging in physical activity, you may need to drink more.

A good way to check your hydration level is to look at the color of your urine, if it’s pale yellow or clear, you are well hydrated, but if it’s dark yellow, amber or brown, you may be dehydrated.

For infants and children, the amount of water they need per day can vary depending on their age and weight. The NHS also has specific recommendations for children.

It is also important to consider that some fruits and vegetables have high water content such as cucumber, watermelon, and strawberries, and including them in the diet will count towards water intake.

It’s important to note that drinking too much water can also be harmful, as it can lead to a condition called hyponatremia, which occurs when the balance of electrolytes in your body is upset. So, while it’s important to stay hydrated, it’s also important to be mindful of your water intake.

It is always best to consult with your doctor or a registered dietitian if you have any concerns about your water intake. They can help you determine the best amount of water for your specific needs.


If you have any musculoskeletal issues, Pure Physiotherapy can offer assistance and advice. We have clinics all over the UK ready to help you. Find your closest location and make an appointment online.



  • National Health Service (NHS). (2020). Stay hydrated: How much water should I drink?.
  • British Dietetic Association. (2019). Staying hydrated: A guide to hydration.
  • National Institute for Health and Care Excellence (NICE). (2015). Fluid balance in adults: oral rehydration solutions, maintenance fluids and additional fluids.