Water

Water

Water is a chemical compound with the chemical formula H20. A water molecule contains one hydrogen atom and two oxygen atoms. Water is a liquid at standard ambient temperature and pressure though it can be a solid (ice)in low temperatures or evaporate into water vapor a higher temperatures.

Industry: Natural environment

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Water

organic chemicals

Natural environment; Water

Chemicals containing carbon.

sewerage

Natural environment; Water

The entire system of sewage collection, treatment, and disposal.

acid

Natural environment; Water

a substance that has a pH of less than 7, which is neutral. Specifically, an acid has more free hydrogen ions (H+) than hydroxyl ions (OH-).

dealkalinisation

Natural environment; Water

Any process that serves to reduce the alkalinity of water.

holding pond

Natural environment; Water

A pond or reservoir, usually made of earth, built to store polluted runoff.

organic contaminants

Natural environment; Water

Carbon-based chemicals, such as solvents and pesticides, which can get into water through runoff from cropland or discharge from factories. EPA has set legal limits on 56 organic contaminants.

shear stress

Natural environment; Water

the frictional force per unit area exerted on a streambed by flowing water. An important factor in the movement of bed material and description of habitat for some organisms.