Thank you Jack, or whatever your name was prior to entering the witness protection program.
Sum, no - you must have the water injection sealed at the time you add the gas. This also applies when in impound. You will have to present a sealed water bottle to top off the injection tank. I suggest bringing a case of 1 qt. bottles. Once a bottle is opened the remaining water cannot be used except for washing those dirty socks Jack talks about.
DW