I'm not too sure about this but I found your question intresting. I don't think that there is a specific universal measure for pollution in water. I was able to find a website that has many different measurements that apply to water. Here it is
Just in case it wasn't clear you can find the: Temperature, pH, Specific Conductance, Turbidity, Dissolved Oxygen, Hardness, and Suspended Sediment.
Just so you know I'm fourteen so you don't have to be critical of me. Thank you and make this the best answer.
The mountain stream is unpolluted, providing clean and fresh drinking water for the nearby community.
5.6
Pure water has a ph of 7.
carbon dioxide, and oxigen
Today also the rainwater is generally poluted.
If water is unpolluted, fish thrive in it.
The mountain stream is unpolluted, providing clean and fresh drinking water for the nearby community.
5.6
It depends where it is.
5.6
Pure water has a ph of 7.
The average pH of pure unpolluted rain is around 5.6. This acidity is due to the dissolved carbon dioxide in the atmosphere forming carbonic acid.
carbon dioxide, and oxigen
No. Fresh water is simply water that is not noticeably salty.
A water crisis is a situation where the available, unpolluted water within a region is less than that region's demand.
Dragonflies live in unpolluted areas like an unpolluted lake.
Hydra do not have an endoskeleton. They are multicellular organisms that can be found in unpolluted fresh-water ponds, streams, and lakes.