March 10-16, 2019 is the 20th Anniversary of National Groundwater Awareness Week.

First up, why should you care?

Well groundwater, as it turns, out is pretty important.

The National Groundwater Association (NGWA), the organization behind this event, has shared the top ten facts about groundwater and its importance.

Did you know…?

  1. Only 1% of the water on Earth is useable, and 99% of that useable water is groundwater.
  2. The United States uses 349 billion gallons of freshwater every day.
  3. Groundwater is 20 to 30 times greater than the amount in all U.S. lakes, streams, and rivers combined.
  4. Groundwater accounts for 33% of all the water used by U.S. municipalities.
  5. 44% of the U.S. population depends on groundwater for its drinking water supply.
  6. More than 13.2 million households have their own well, representing 34 million people.
  7. 53.5 billion gallons of groundwater are used for agricultural irrigation each day; in 1990 that number was 2.2 billion.
  8. The largest U.S. aquifer is Ogallala, underlying 250,000 square miles stretching from Texas to South Dakota. Scientists estimate it could take 6,000 years to naturally refill the aquifer if it were ever fully depleted.
  9. California pumps 10.7 billion gallons of groundwater each day, a third more than the second-ranked state, Texas.
  10. Groundwater is the world’s most extracted raw material, with withdrawal rates in the estimated range of 259 trillion gallons per year.

The 2019 National Groundwater Awareness Week theme is Think:

“Think was designed to urge each of us to consider various ways we can protect our most valuable natural resource. So Think about not running the water while you brush your teeth. Or Think about getting that leaking faucet fixed. Think about the farmers that rely on groundwater to grow the food we eat. And Think about having your well inspected to protect your drinking water system. In short, during #GWAW, Think about our future.”



As the demand for water resources continues to grow, the ability to assess the impact of urban development and agriculture on water resources is more important than ever.

To meet this growing demand, water resource managers, engineers, and hydrologists have a greater need to monitor groundwater and surface water levels with water level data loggers in order to document baseline and changing water levels over time.

Onset has been supporting water resource managers, engineers, and hydrologists for decades, and our water level data loggers are perfect for groundwater monitoring.

Our newest water level logger is the industry's first Bluetooth Low Energy (BLE) water level logger. Check out HOBO MX2001 Water Level Logger.

Interested in water level data logging? Check out this free guide:

Choosing a Water Level Logger: 5 Things You Should Know

We also have a free on-demand webinar focused on groundwater monitoring:

Groundwater Monitoring with HOBO Data Loggers (Webinar)

Are you using a HOBO water level data logger or a water quality logger to study groundwater? We’d love to hear about your application! Email us at social@onsetcomp.com.