It’s easy to turn up your nose at what you flush down your toilet, but once the city cleans that wastewater, it can benefit the San Antonio River.

Treated effluent makes up 90 percent of the flow in the river. It keeps aquatic plants and animals alive. It cools generators at CPS Energy power plants. Some of it makes it all the way down to the coast, filling areas of the river along the way and nurturing fragile estuaries that depend on fresh water.

Read more from Elena Bruess with San Antonio Express-News here.