The best way to take all water out in such conditions is to fill maximum possible water in your hand (make a cup of it as when you drink water from tap)and, suppose it is a left ear, then tilt your head toward left- place the water filled hand below left ear- instantly, very quickly move your head opposite so that all water from hand enters the left ear- and again very quickly tilt your head toward left so that all water will come out(even that which was present prior to doing this activity.) It often happens that very small quantity of water does not come out of ear, so we have to fill the same ear with more water- this facilitates that small amount of water to get mix with large quantity of water inserted and all water comes out very easily.Trust me, its a tested remedy. follow the same procedure for right ear if there is water in that ear also.