Fossil groundwater has been under the ground for more than ~12 thousand years. Here the authors show that many wells in the United States tap fossil groundwater resources, and that the frequency that wells are drilled into fossil aquifers is increasing, highlighting the importance of safeguarding fossil groundwater quality and quantity to meet present and future water demands.
- Merhawi GebreEgziabher
- Scott Jasechko
- Debra Perrone