Anybody has Residential Water well borehole? Permission needed? Cost?

awara

Hello
I have been reading about this and found out that if the you are pumping less than 20/m3 per day than you do not need planning permission.
Based on estimated consumption for the year of our household we need about 2-3/m3 per day.
That cost about £600 per year from severn trent.

I see a lot of companies offering water well drilling.
I wondered if anybody here have water well drilled in the house, how much it cost and whether happy or not?

Thanks