Most adults drink around 2 litres of water a day, and more in the Egyptian summer or after sport. Children drink a bit less. If you also cook, make tea and coffee with bottled water, you use more.
A quick rule
For drinking only, one 18.9 L gallon lasts two people about 4 to 5 days. A family of four usually needs 3 to 4 gallons a week for drinking and cooking.
Never run out
Keep one full gallon in reserve. When you open it, order your refill on the website or on WhatsApp. Delivery is free.