Sometimes pollution is easy to see. Garbage and oily chemicals make water look nasty, but pollution can also be invisible. So how do you know if a pond, lake or river is healthy? Scientists test the water to help them find out — and so can you.
With a water testing kit and some help from an adult, you’ll be able to test TEMPERATURE, TURBIDITY, DISSOLVED OXYGEN and pH. Wondering what those are? Check the glossary, or follow this link to the water quality monitoring pages.