How much water can be stored in one workbench from the water purifier factory?

Ive been playing fallout since it came out on the xbox one, and from what I gathered there can only be about 254 purified water stored in one workbench at once produced from the factories. Am i just always catching them at that number or is that the production cap for xbox one?

I will look further in to it in game if nobody knows. Ive been waiting for a post about it for a while. Figured i would finally make an account and ask.