Use a water ionizer machine
Add alkaline water drops or mineral drops to plain water
Mix a small amount of baking soda into water
Add a pinch of baking soda to a glass or bottle of water and stir well
Use pH test strips to check the result
Use filtered water as the base
Add mineral-rich ingredients like cucumber or lemon slices to water and let it sit
Use alkaline water pitchers or filters designed to raise pH