Groundwater, wells, and testing made visible.
Underfoot Water
Underfoot Water is an educational publication about aquifers, groundwater movement, private wells, and the evidence needed to make careful water-testing decisions.
Aquifers & Flow
What Is an Aquifer? Groundwater in Plain English
An aquifer is a permeable layer of rock, sand, or gravel that stores and transmits enough groundwater to supply wells or springs.
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Private-Well Literacy
How Often Should You Test Private Well Water?
The U.S. Centers for Disease Control and Prevention says to test private well water at least once every year for total coliform bacteria, nitrates, total…
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