https://journals.plos.org/water/article?id=10.1371/journal.pwat.0000113
Released on World Water Day 2022, the 2022 United Nations World Water Development Report, Groundwater: Making the invisible visible [1], highlights the importance of groundwater in meeting water demands globally. Noted ominously in the report’s short summary is that “this natural resource is often poorly understood, and consequently undervalued, mismanaged and even abused.” Hence, the need for increasing the visibility of a critical water resource that, unlike rivers, lakes, and oceans, cannot be seen.