You can store your sachet and bottled water up to 4 weeks from the date of production. A 4 – 12 weeks shelf life for packaged drinking water is recommended.

Water is life and every living thing depends on it for existence. Sachet water has gradually become the most widely consumed liquid in Nigeria with varying qualities.

Olaniyan and others of the Department of Civil Engineering, Ladoke Akintola University of Technology, Ogbomoso, Oyo State Nigeria studied Ten (10) brands of sachet water from Ogbomoso South and North Local government area and recommended 12 weeks shelf life of water from the date of production.

Akpen and others of the Department of Civil Engineering, University Of Agriculture, Makurdi, Benue State analyzed eight brands of sachet water and four brands of bottled water samples were collected from different manufacturers at Gboko town, Benue State. They recommended 12 weeks shelf life.

Akinde and others of the Department of Biological Sciences, College of Science, Engineering and Technology, Osun State University evaluated the effect of storage on the physico-chemical status and bacteriological quality of sachet water produced in Port Harcourt. 10 brands of sachet water was studied and recommended that expiry date of sachet water produced in Nigeria should not exceed four weeks from the date of production.

https://odfidtechnicalworld..com/2021/09/water-safety-how-long-should-sachet.html

If you get money, just be taking good bottle water. Because, most sachet water causes typhoid.