he Water overlay shows you which areas have access to water from fountains (shown in navy blue) and the area that pipes from reservoirs cover, which is extremely useful for siting new fountains and additional reservoirs.

Empty land that has pipe access is covered by a grid of grey stone channels. Buildings that have water appear as furrowed, pale blue squares; buildings that don't need water are plain tan squares. Fountain access appears as a blue tint radiating from the fountain.