Technically, water from your bong will trap a negligible amount of THC in it. However, it’s such a small portion that you’re unlikely to be able to tell. Bongs allow the user to take larger tokes more smoothly, and in doing so, get more THC into their lungs at a time, which can in turn potentially get someone higher quicker. However, the real determining factor of how high you get from your experience will be determined by how much cannabis is consumed.