Turbidity

Okay, let's suppose you are playing in your swimming pool and your mom tells you not to drink the water. You may ask her why and she may tell you that the water is not clean, it is not clear, and it has turbidity. Now, let me explain to you what turbidity means.

Turbidity is like a friend of dirt, mud, and other tiny particles that can be found in water. When something is turbid, it means it is not clear or transparent, but instead, it looks cloudy or murky. Just like when you stir up the dirt at the bottom of a puddle, the water becomes cloudy and you cannot see through it. That's turbidity!

Sometimes, these tiny particles can come from sources that are natural like leaves, sand, or soil that gets washed into the water. Other times, they might come from human activities like construction or farming. If someone puts chemicals into the water, that can also cause turbidity.

So, when people say they are testing the turbidity of water, they are checking how many little particles are floating around in it. The more particles there are, the cloudier and less clean the water is. This is important because if you drink the water, it could make you sick. Therefore, it's always better to check the turbidity of water before using it or drinking it.