Groundwater is a key component of the water cycle, comprising about 30% of Canada’s freshwater supply. Yet, because groundwater is largely invisible within the subsurface, it is frequently underrepresented in freshwater communication and difficult to effectively communicate to communities not reliant on it. Hydrogeologists require broad and complex skills to make the invisible visible. This challenge is compounded by specialized terminology, geological interpretation, non-linear equations, and uncertainty. Hydrogeological practice is grounded in the development of conceptual models: simplified representations of groundwater flow systems built from limited and uncertain data. These models provide a powerful framework for communication because they organize complexity into layered narratives. Geological understanding establishes the framework for subsurface water; hydrostratigraphy introduces the organization of aquifers and confining units that impact flow; and chemostratigraphy adds insight into flow paths, residence time, and connectivity. By adjusting the level of detail within these layers, conceptual models can be used to communicate groundwater processes to diverse audiences. To enhance engagement across diverse audiences and learning styles, these conceptual models can be visualized using 3D printing, digital mapping, and immersive tools such as augmented and virtual reality. Physical and virtual models allow audiences to see and explore stacked geological layers and flow systems, while numerical models can be used to create videos showing system responses to climate variability and human use. Together, these tools not only make groundwater visible, but also communicate uncertainty and system complexity, critical for building trust and an informed community.