Relocating the construction water connection yourself, what does the connection look like?

Someone wrote somewhere that she apparently had a conflict with the moderation...

Sigh. There is no moderation here at all, it's just an AI, which we shouldn't take offense at. In my opinion, AIs are not capable of satisfaction. ;-)

so 220€ compared to what does a chemical toilet/week cost 40€?!

Yes, your estimated costs are pretty accurate. :)

I got my WC box for a little less. The first month for ~150, the second for ~140. The setup is included in the first. It would be cheaper without vandalism insurance. But it was especially important to my wife; she doesn't want a bunch of craftsmen on the new toilet...