You can get alkaline water at home without having to use a dedicated alkaline water converter, but you won't get the same level of alkalinity as a dedicated alkaline water device. Adding lemon juice to water makes it alkaline, it is an easy way to get alkaline water at home, Baking soda also has nine pH levels and you can simply add it to water to get alkaline water. The recommended amount is 1/2 teaspoon dissolved baking soda in a 4-ounce cup of water. Keep in mind that baking soda can have after effects If used in large quantities.