Contaminant
Any substance that is found in an environment where it does not belong.
Contaminant: Any physical, chemical, biological, or radiological substance or matter that has an adverse affect on air, water, or soil.
Contaminant: Any substance that enters a system (the environment, human body, food, etc.) where it is not normally found.
Contaminant: An undesirable substance (physical, chemical, biological, or radiological) not normally present, or an unusually high concentration of a naturally occurring substance, in water, soil, or other environmental medium.
Contaminant- A material harmful to the recycling process when included with recyclable material.
Direct Runoff- Water that flows over the ground surface or through the ground directly into streams, rivers, and lakes.
Contaminant: Any biological, chemical, physical or radiological substance that has an negative effect on air, soil or water.
Deforestation: The felling of trees, usually for commercial purposes.
Contaminants
Contaminants of air can be classified as particulates and gases.
Contaminant Any foreign component in a substance, for example in water.
Corrosivity Ability of water to dissolve or break down certain substances, particularly metals.
Contaminant
A substance that is either present in an environment where it does not belong or is present at levels that might cause harmful (adverse) health effects.
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CONTAMINANT: Possible Health Effects at High Levels
Ozone Depletion
Increased UV exposure is linked to skin cancer, premature skin aging and cataracts.
Acid Rain
May contribute to respiratory illness and reduced lung function ...
Contaminant
Any physical, chemical, biological, or radiological substance or matter that has an adverse effect on air, water, or soil.(1)
Cumulative exposure
The summation of exposures of an organism to a chemical over a period of time.(1) ...
contaminant
Minor impurity present in a substance.
Extraneous material inadvertently added to a sample prior to or during chemical or biological analysis ...
Air Contaminant: Any particulate matter, gas, or combination thereof, other than water vapor. (See: air pollutant.) ...
Maximum Contaminant Level (MCL): The maximum level of a contaminant allowed in water by federal law. Based on health effects and currently available treatment methods.
maximum contaminant level (MCL)
Under the Safe Drinking Water Act (USA), ...
maximum contaminant level (MCL) The maximum permissible level of a contaminant in water which is delivered to the free flowing outlet of the ultimate user of a public water system, ...
MAXIMUM CONTAMINANT LEVEL: The highest allowable amount of a constituent in water. Drinking water quality criteria are established by the U.S. Environmental Protection Agency as regulatory standards.
Maximum contaminant level (MCL)
A contaminant level for drinking water, established by the California Department of Health Services, Division of Drinking Water and Environmental Management, or by the U.S. Environmental Protection Agency.
maximum contaminant level The highest level of a contaminant permissible in water in a public water system. master streamThe largest stream within a drainage basin into which all other streams flow.
Contaminants or substances in the air that interfere with human health or produce other harmful environmental effects.
Alternative Energy ...
Contaminant Plume: Contaminants which encroach into a groundwater system are moved down gradient. The area of the aquifer containing the degraded water which resulted from the migration of a pollutant is called a contaminant plume.
Trace contaminants Contamination found in trace (very low) levels.
Transpiration The loss of water from plants through leaves and other parts. This loss can be a significant amount of water during very dry periods.
Toxic Air Contaminant (TAC): An air pollutant, identified in regulation by the ARB, which may cause or contribute to an increase in deaths or in serious illness, or which may pose a present or potential hazard to human health.
Biological Contaminants- Living organisms or derivates (e.g. viruses, bacteria, fungi, and mammal and bird antigens) that can cause harmful health effects when inhaled, swallowed, or otherwise taken into the body.
Organic contaminants
Organic chemicals which are toxic to organisms; they may be persistent and mobile in the environment.
Oxygen demand ...
waterborne contaminants - unhealthy chemicals, microorganisms (like bacteria) or radiation, found in tap water.
water filters - substances (such as charcoal) or fine membrane structures used to remove impurities from water.
pollution: contaminants that damage an ecosystem, or organisms living in that ecosystem.
precycling: reducing waste by avoiding packaging when shopping by taking your own bags, takeaway containers etc.
An inventory of contaminant sources within delineated State Water-Protection Areas. Targets likely sources for further investigation.
Source: Terms of the Environment
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The presence of contaminant or pollutant substances in the air at a concentration that interferes with human health or welfare, or produces other harmful environmental effects.
Translations of "air pollution":
Language Translations
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MCL. Maximum contaminant level. Set by EPA for a regulated substance in drinking water.
MGD. Million gallons per day.
Air pollution - contaminants or substances in the air that interfere with human health or produce other harmful environmental effects. Read our "What is Air Pollution?" article for further information.
Water that collects contaminants as it trickles through wastes, pesticides or fertilizers. Leaching may occur in farming areas, feedlots, and landfills, and may result in hazardous substances entering surface water, ground water, or soil.
Air Pollution - Airborne contaminants or pollutants that adversely affect the environment or human health.
Indoor Air Quality (IAQ) - Indoor air that contains no known contaminants at harmful concentrations and with which a substantial majority of the people exposed to the air do not express dissatisfaction.
For all regulated contaminants, the initial compliance period is the first full three year compliance period beginning at least 18 months after promulgation with the exception of waterworks with 150 or more service connections for contaminants ...
Dioxins are a group of 80 or so chlorinated compounds that occur as contaminants of a number of industrial processes involving chlorinated substances.
Brownfields - sites that have environmental contaminants . The use of brownfields typically reduces land cost by using land which is less desirable.
Recommended Maximum Contaminant Level (RMCL): The maximum level of a contaminant in drinking water at which no known or anticipated adverse effect on human health would occur, and that includes an adequate margin of safety.
Bioassay: A method used to determine the toxicity of specific chemical contaminants. A number of individuals of a sensitive species are placed in water containing specific concentrations of the contaminant for a specified period of time.
They make great recreational spaces, prevent soil erosion, filter contaminants from rainwater and absorb many kinds of airborne pollutants. So you might still keep a short section of lawn, one that can be mowed with a few easy strokes.
Cross Contamination: The spread of contaminants from an affected area or person to an unaffected area or person.
Dehumidification: The process of reducing the moisture content to a regulated work area.
Plume
A concentration of contaminants in air, soil, or water usually extending from a distinct source.
Leaching: The process by which soluble materials in the soil, such as nutrients, pesticide chemicals, or contaminants, are washed into a lower layer of soil or are dissolved and carried away by water.
"Suitable" indoor air quality can conferred on air in which there are no known contaminants at harmful levels as determined by appropriate authorities or--more likely--air with which 80% or more of the people exposed do not express dissatisfaction.
DEINKING A process that removes inks, dyes or other contaminants from collected wastepaper.
Employee Exposure: Exposure to a concentration of an airborne contaminant that would occur if the employee were not using respiratory protection.
(1) Generally, a term used to describe the slowing, modification, or diversion of the flow of water as with Detention and Retention.
(2) (Water Quality) The process of diminishing contaminant concentrations in ground water, due to filtration, ...
It has set wastewater standards for businesses and boats, as well as water quality standards for any potential water contaminants, and funded the construction of sewage treatment plants to reuse wastewater.
Building Related Illness (BRI) - BRI refers to a diagnosed illness of which the symptoms of are identified and can be attributed directly to airborne building contaminants.
VOC contaminants can also be found in manufactured wood products and finishes, adhesives and upholstery.
The condition of the marine environment from the perspective of adverse effects caused by anthropogenic (human) activities, in particular habitat destruction, changed sedimentation rates and the mobilization of contaminants.
 See also: Water, Air, Environment, Waste, Condition
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