It depends on various factors, a guideline is for women is 4 X Sachets of Shasa Spring water a day ( 2 Liters or 200CL) and for men 6 X Sachets of Shasa (3 Liters or 300CL) Spring water a day is great. This is a good target for everyday consumption. However, certain situations will require you to drink more water to maintain good hydration. These include physical activity and exercise, hot and/or humid weather, and occasions when you are vomiting or have diarrhea. Every person’s hydration requirements are different, depending on factors like medical history, health conditions, and any medications being taken. Talk to your doctor to come up with a personalized hydration plan that meets your unique needs.