The water tower does not open. The missing signal flag is on top of the tower and can only be reached by the jetpack.(see related question)
On the island Old Poptropica on the water tower.
yes there is a flag in poptropica it is on the water tower but I don't know how to get up there if you talk to the guy standing by the water tower he will tell you it is up there
Go to the place where the pumpkin is and go over the shovel on the Poptropica water tower. :-)
If you are asking about the flag in new poptropica.. then the flag is on the water tower that is leaking. If it is something else, tell me
A:you drop from the giants gardenA:use the jetpack from the airship graveyard to fly to the tower
Not and still be a tower. The Signal Flag is atop the water tower on Early Poptropica, but you can't jump up to it. You will have to go the long way. (see the related question)
The flag is on top of the Water Tower in Early Poptropica. You will need the jetpack to reach it. (see related question)
you have to go to the giant layer on top of one of the buildings then at the end you fall through the clouds on top of the water tower
In Early Poptropica, go left to the towers and at the green tower, go up it until you reach the window with the flower. Break the window. (This costume might not be available.)
You don't fix the leak on the water tower. It is not part of the island quest.
That would be the lighthouse. You get it on top of the water tower, but you need a jet pack.