Questions about tap water in everyday life

How much does a liter (33oz) of water cost?

How much money can a household of three save in a year by switching to tap water?

What’s the best way to get rid of limescale deposits in my water cooker and in my shower?

Should I filter my tap water?

Should I let the tap run for a bit before drinking the water?

Funding number: 03KE0071 / project duration: 01.05.2019 to 30.04.2022