How does the water pressure change at each level in the jug below how can you tell?

Water pressure increases with depth due to the weight of the water above. In a jug, the pressure at the bottom is greater than at the top because more water is pressing down from above. You can tell this by observing that the water at the bottom exerts more force on the jug's walls, which can be measured with a pressure gauge or inferred from the way the water level rises when more water is added.