Although all pollutants are considered a health risk if they reach certain levels, ozone, which is regularly recorded as the most common pollutant, is particularly dangerous.

Nitrogen is a common pollutant found in streams.

"The notion was that many of these common pollutants were poisoning our food and oxygen sources," she said.

Once runoff is infiltrated into soils, plants and microbes can naturally filter and break down many common pollutants found in stormwater.

One of the most common pollutants is ozone, which is created in the atmosphere by a combination of sunlight, nitrogen oxide, and hydrocarbons from burning fuel.

Another common environmental pollutant that results from industrial processes is formaldehyde.

Also, the Duwamish River's most common pollutant is petroleum.

If some of the sophonts in your company carry odors like those of common pollutants, it may be no surprise that he reacts to them with hostility.

Lead is now a common environmental pollutant.

Copper, a common industrial pollutant has been shown to interfere with the life history and development of coral polyps.