Included in this on-line water quality primer is information about the principle types of water quality problems impacting our lakes and streams, as well as in-depth descriptions of the water quality parameters used by Water on the Web. Use the navigation bar located on the top left side of each page, or use the links provided at the bottom of each page to move forward or backward in the primer.

What is the number one impairment to US streams and rivers?
(for the answer, roll your cursor over the image,
for more information, click here)