pH in the Stream


Michigan Environmental Education Curriculum
Stream Monitoring

The pH is the measure of the acidity of water. The pH in the stream will affect what types of organisms can live in the stream.

The pH in a stream can change when water is polluted. For example, air pollution from coal-fired power plants can cause acid rain. When the acid rain finds its way into the stream the pH in the stream can decrease.

See what happens when you adjust the pH by sliding the bar back and forth on the image. Notice how some organisms cannot live when the pH changes only slightly.

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