We were told exactly the same thing as Rimms was when we travelled back on the 4th.I had a bottle of water in my hand as I wanted to be clear on what the rule was, I showed it to the security chap and he pointed to my case and so I put it in there, the people behind us put there bottles in the plastic trays you get for your coins and stuff and then just retrieved them after they had been scanned!
I agree with what Scunner and Rimms said, the ban is there for a reason but that first security scan if you are carrying liquids seems pointless! I asked the price of the water at the little cafe at the departure gate and asked the guy if I buy it can I take it on the plane to which he just shrugged. I for one will not pay that price for a bottle of water out of principle but it is going to be a nightmare in the summer not having water at the airport, also took me one hour after take off to buy a bottle on the flight.