Today, we look at testing water quality. How can we really find out what is in the water? How can we test for the things we cannot see. We know we have some dirt in the water, but does that mean it is polluted? We know that we have fish living in our stream. That must mean it's suitable for living things, right? We also know that trout need very clean water. Could we release our trout in the stream? Would they survive?\r\n\r\nTo test some aspects of water quality, students took two samples from the stream, one upstream and one downstream. They also took a sample from the trout tank. Using the water testing kit that comes with our Trout Tank supplies, they tested the water quality of all three samples and compared the results.