Any substance of such character and in such quantities that when it reaches a body of water, soil, or air, it is degrading in effect so as to impair the water, soil, or air's usefulness or render it offensive.
an unwanted contaminant or pathogen of anthropogenic origin that can be found in water, soil, and air. Pollutants are chemicals and organisms that have been associated with adverse environmental and health effects.
EPER: individual substance or group of substance listed [into a specific selection of substances or category of substances][which can harm or affect the environment]; a potentially harmful agent that occurs in the environment as a result of human action
Any undesirable solid, liquid or gaseous matter in an environmental medium: "undesirability" is often concentration-dependent, low concentrations of most substances being tolerable or even essential in many cases. (In the context of air pollution, an undesirable modification is one that has injurious or deleterious effects.) A primary pollutant is one emitted into the atmosphere, water, sediments or soil from an identifiable source. A secondary pollutant is a pollutant formed by chemical reaction in the atmosphere, water, sediments, or soil. No entries
is anything introduced into the environment that causes problems for people or animals. Air pollutants are unwanted chemicals or other materials found in the air, such as grasses, vapors, dust, smoke, or soot. Most pollutants are created as by-products of processes found to be useful.
A contaminant, a substance that is not naturally present in water or occurs in unnatural amounts that can degrade the physical, chemical, or biological properties of the water. Pollutants can be chemicals, disease-producing organisms, silt, toxic metals, oxygen-demanding materials, to name a few.
Air contaminants that fall in the categories for criteria and non-criteria pollutants. Criteria pollutants are carbon monoxide, particulate matter, nitrogen dioxide, sulfur dioxide, lead and ozone (volatile organic compounds and nitrogen oxides are precursors of ozone). The non-criteria pollutants include fluorides, asbestos, beryllium, mercury, vinyl chloride, sulfuric acid mists, hydrogen sulfide (H2S), total reduced sulfur (including H2S), and reduced sulfur compounds (including H2S). APC Rule 1220-3-9-.01(4)(b) and Rule 1200-3-3, Table 1. For Water Pollution Control, ÒpollutantsÓ are defined as sewage, industrial waste or other wastes. SWP Rule 69-3-103.(21)
any substance of such character and in such quantities that upon reaching the environment (soil, water or air), is degrading in effect so as to impair the environment's usefulness or render it offensive.
A by-product of human activities which enters or becomes concentrated in the environment, where it may cause injury to humans or desirable species. In addition to chemical substances,the term also embraces noise, vibration and alterations to the ambient temperature. pore space: The total space not occupied by soil particles in a bulk volume of soil.
Strictly too much of any substance in the wrong place or at the wrong time is a pollutant. More specifically, atmospheric pollution may be defined as 'the presence of substances in the atmosphere, resulting from man-made activities or from natural processes, causing adverse effects to man and the environment'.
Any undesirable solid, liquid or gaseous matter in a solid, liquid or gaseous environmental medium: "undesirability" is often concentration-dependent, low concentrations of most substances being tolerable or even essential in many cases. For the meaning of "undesirable" in air pollution contexts, see "pollution". A primary pollutant is one emitted into the atmosphere, water, sediments or soil from an identifiable source. A secondary pollutant is a pollutant formed by chemical reaction in the atmosphere, water, sediments, or soil. PS contaminant. RT pollution, secondary pollutant. After WHO, 1980
Any substance, as certain chemicals or waste products, that renders the air, soil, water, or other natural resource harmful or unsuitable for a specific purpose. The term "Pollution" also includes such things as impairment to habitat and barriers to fish passage.
Particles, gases, or liquid aerosols in the atmosphere which have an undesirable effect on humans or their surroundings. Something unfavorable to health and life that has been added to the environment.