Construction water

Hello!
We are now slowly getting started and are currently working on organizing the framework conditions.
We currently have the following questions and hope for your help:

How many liters of construction water are consumed in total during the construction?
What costs are to be expected in this regard?
Could the construction water also be supplied via a garden well?
What would possibly need to be considered in the latter case? (Quality/composition of the water)

Thank you very much in advance!

I am not asking for the first time why it is so difficult to use the search function of the HBF?



Rhenish greetings

There are answers to only half of my questions there, but it's okay, I'm happy to join the old thread.