Lime filter cold water inlet faucet dishwasher

For some time now, the local water supply has had an increased lime content, which is why I now want to install a lime filter before the cold water supply of a faucet and the dishwasher.

Now I am wondering which solution would be the best and which system is good and inexpensive. I suspect that I should install a filter directly at the outlet in the wall and between the faucet - see picture.

Thank you very much for suggestions.

Water tap and dishwasher want to install.

Then consider whether washing machine, dishwasher, coffee machine, all bathrooms also prefer descaled water, Our solution is one device for everything

I was thinking of a more cost-effective solution.

Theoretically, I could filter the entire inflow that leads to me through a single copper pipe from the [Gemeinschaftseigentum-Keller]. I assume that a filter can be installed between a copper pipe? Which solution is recommended here?

if the information only comes in bits and pieces... Did I understand correctly that you live in an apartment building and cannot do anything after the water meter or with the hot water? Washing machines and dishwashers usually have no problems with limescale because the detergents descale. However, there are small screw-in filters available, but I cannot say anything about their effectiveness