I don't have a DO meter, but if a well doesn't have any DO, how much DO would be added to the water by splashing out from the faucet if it was run into a laundry tub/sink?
My well sucks from 66' down, and I if I fill the laundry tub 50% with water, 3 CC will survive 12 hrs+. One 15" LMB lasted about as long and if 6 BG, 8" or so long are put in there, they will still be swimming the next morning (about 12 hrs.) No piping at the surface either. Temp is 52* or so.