Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
The U.S. Geological Survey booth at the 20th Annual Orange County Water Festival taught local fourth and fifth graders about water-quality issues in different types of water, including groundwater.
Public Domain.
