Indeed, a painful thing is that we must wait to drink: wait for the whole tank is filtered, otherwise unfiltered water flowed right into the glass. There was no system to block water that had not had time to filter ...
Here is an airtight cap system, associated with a spout: only filtered water flows! And unfiltered water waits to be. I am convinced, and I highly recommend.
The weak point? maybe the width of the carafe, a little big for small hands (woman or child)?
