The depression, roughly conical in shape, produced in the water table by the pumping of water from a well. Confluent Growth

A

Adsorptive particles or granules of carbon usually obtained by heating carbon (such as wood). These particles or granules have a high capacity to selectively remove certain trace and soluble materials from water. Acute Health Effect

The process of adding air to water. Air can be added to water by passing air through water or passing water through air. Algae

The quantitative capacity of water to neutralize an acid. Generally measured in mg/l, as CaCO3. Ambient Temperature

Bottled water from a well, tapping a confined aquifer, in which the water level stands at some height above the top of the aquifer. Aquifer

Singular term for bacterium. Microscopic living organisms usually consisting of a single cell. Best Available Technology

The amount of oxygen consumed by microorganisms, mainly bacteria, and by chemical reactions in the biodegradation of organic matter. Blank

Water that is intended for human consumption, sealed in bottles or other containers, with no added ingredients. It may optionally contain safe and suitable anti-microbial agents. Fluoride may be optionally added within the limitations established in 21 CFR section 165.110(b)(4)(ii). Buffer

An expression of the concentration of specified constituents in water, in terms of their equivalent value to calcium carbonate. For example, the hardness in water, (which is caused by calcium, magnesium and other ions) is usually described as calcium carbonate equivalent. Calibration