# Underfoot Water

> Underfoot Water is an educational publication about aquifers, groundwater movement, private wells, and the evidence needed to make careful water-testing decisions.

Underfoot Water publishes original, long-form guides about Groundwater, wells, and testing made visible.. Every article opens with a concise direct answer, is structured with clear headings and FAQs, and reflects mainstream expert consensus. Health-related content is educational and encourages professional consultation where appropriate.

## Private-Well Literacy

- [How Often Should You Test Private Well Water?](https://groundwatergovernance.org/how-often-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…
- [How to Read a Private Well Water Test Report](https://groundwatergovernance.org/how-to-read-well-water-test-report/): Read the sample identity first, then each tested substance, result, unit, reporting limit, and laboratory note.

## Aquifers & Flow

- [How to Read a Groundwater Hydrograph](https://groundwatergovernance.org/read-groundwater-level-hydrograph/): Read the well identifier, dates, vertical-axis label and data notes before interpreting the line.
- [What Is an Aquifer? Groundwater in Plain English](https://groundwatergovernance.org/what-is-an-aquifer/): An aquifer is a permeable layer of rock, sand, or gravel that stores and transmits enough groundwater to supply wells or springs.

## Full text for LLMs

- [llms-full.txt](https://groundwatergovernance.org/llms-full.txt): every article as plain markdown in one file
- Each article is also available as markdown at https://groundwatergovernance.org/<slug>.md

## Site

- [About](https://groundwatergovernance.org/about/): editorial approach and standards
- [All articles](https://groundwatergovernance.org/all/)
- [Contact](https://groundwatergovernance.org/contact/)