Want better video quality? Sign in to access HD streaming!


Want to watch better-quality PBS Video? Sign in to access HD streaming!

When you sign in, you'll become a PBS Insider and we'll share your contact information with your local PBS station. You may receive updates to help you stay connected with what's happening online and in your community. Privacy Policy

Closed Captioning Settings


Captions look like this

Captions size

  • 15

Captions font family

Edge style

Captions color

Background color

Window color

Text Opacity

  • 100%

Background Opacity

  • 100%

Window Opacity

  • 0%


Nitrate Contamination in Water Supply (No. 3709)

  • Aired: 06/03/2012
  • 56:47
  • Rating: NR
Stephanie Ewing, Land Resources and Environmental Sciences, will join the panel to answer your questions about possible contamination from nitrates.
Embed Options
Close ×
Nitrate Contamination in Water Supply (No. 3709)
Nitrate Contamination in Water Supply (No. 3709)
Stephanie Ewing joins the panel to answer questions about contamination from nitrates.
Please copy this text to your clipboard.
Problems Playing Video ?
Related Links:


Watch videos from your favorite PBS KIDS shows with the PBS KIDS Video app for your tablet or phone.

Downton Abbey Collection

Bring home the complete collection: DVDs, Blu-rays, books, gifts and more. Visit ShopPBS.


MontanaPBS helps all of us explore new worlds and ideas. Give Now