You're either looking for AQI or PPM.
AQI = Air Quality Index, a combination of: ozone +particles +carbon monoxide +sulfur dioxide +nitrogen dioxide.
Each of these 5 components can be measured as its own concentration in the air as PPM, parts per million. Less commonly PPB, parts per billion.
Good clean AQI < 50
Bad polluted AQI > 100
No,because it is a clean energy source and workers on the hover dam make it impossible for the water to even get polluted.
Polluted groundwater is difficult to clean because contaminants can spread quickly and deeply within the groundwater system. Additionally, the natural filtering process in the ground can be slow, making it challenging to remove pollutants effectively. Restoration efforts can also be complicated and expensive due to the complex nature of groundwater flow and the variety of pollutants present.
Snow can become polluted by picking up pollutants like soot, dust, and chemicals as it falls through the atmosphere. In urban areas particularly, snow can pick up pollutants from vehicle emissions, industrial activities, and other sources, making it less clean than pure snowfall.
Unpolluted! Or not polluted. Or clean. Or pure.
The opposite of polluted is clean.
It is very polluted.
The Clean Water Act passed in 1972. It is a Federal measure to regulate discharge of pollutants into any waters in the US.
Scientists often use a combination of physical, chemical, and biological methods to clean polluted water. These methods can include sedimentation, filtration, chemical treatment, and biological treatment using microbes or plants to break down pollutants. Advanced technologies like membrane filtration, ultraviolet treatment, and ozone treatment can also be used to remove contaminants from water.
Polluted.
polluted
Static electricity is used in cleaning polluted air through a process called electrostatic precipitation. In this method, particles in the air are given an electric charge and then attracted to plates with an opposite charge, effectively removing them from the air. This process is commonly used in industrial air filtration systems to clean pollutants from the air.
Switzerland is a very green and clean and unpolluted country.