"Groundwater is the water found underground in the cracks and spaces in soil, sand and rock. It is stored in and moves slowly through geologic formations of soil, sand and rocks called aquifers." The Groundwater Foundation
According to estimates from the CDC, over 103 million Americans get their drinking water from groundwater sources:
- Local water district and part of arger water distribution system
- Private wells directly into homes.
Groundwater is vital to US food supplies; currently 64% of crops in the United States are irrigated by groundwater.
While groundwater is generally a safe and healthy source of water, its supply is not endless. A number of factors have significant implications on groundwater quantity and quality:
- Chemical spills
- Feedlot run-off
- Pesticide overuse
- Leaking sewage systems
- Hydraulic Fracturing (fracking)
In recent years, drought has had the biggest impact on groundwater supplies and quality.