If you are unlucky with your tap water, you will be unlucky with your kitchenware. In particular, you will have to periodically change your kettle as its walls become coated with limescale.
Industrial developments are a great help in this regard, but even modern housewives do not particularly trust chemistry and make do with folk recipes.
Here are some ways to descale your kettle.
It's simple. Fill the kettle with water, bring it to a boil and add 1 cup of vinegar. Leave it for 30 minutes, then rinse with water.
Dissolve 1 tablespoon of citric acid in 1 glass of water. Pour the solution into the kettle, bring to a boil and leave for 30-60 minutes. Be sure to rinse with water after cleaning.
You will need 2 tablespoons of soda per 0.5 liters of water. Pour the solution into the kettle and bring to a boil. Leave for 1-2 hours, after which it remains to rinse the utensils with running water.
Housewives often use popular sodas like "cola" or "sprite". Pour it into the kettle to the maximum mark. Bring to a boil. Let it brew for 15-30 minutes, and then rinse the kettle.
Experience and practice suggest that folk methods are only helpful in cases where limescale is just settling on the walls of the dishes.