raw water sample A water sample gathered prior to treatment of any kind.
reach The length of a river between two gaging stations. More generally, any length of a river.
a . The alkalinity is measured by the amount of
standard sulfuric acid required to lower the pH of the water
to a pH level of 4.5, as indicated by the change in color of ...
Blinds: Water samples containing a chemical of known concentration given a fictitious company name and slipped into the sample flow of the lab to test the impartiality of the lab staff ...
A series of s taken over a given period of time and weighted by flow rate.
Two or more different elements held together in fixed proportions by attractive forces called chemical bonds.
The alkalinity in a water sample measured by the amount of standard acid needed to lower the pH to a level of 8.3 as indicated by the change of colour of the phenolphthalein from pink to clear.
The more complex or difficult measurements are those that come from analytical methods, typically requiring a to be collected, preserved, and later analyzed in a laboratory setting.
Water samples in 25 cities contained chromium-6 at concentrations higher than 0.06 parts per billion (ppb), the "safe maximum" recently proposed by California regulators.
Preservative: A chemical added to organic (or inorganic) s to maintain the integrity of the sample. Some common preservatives include nitric acid, hydrochloric acid, phosphoric acid, sodium hydroxide, and refrigeration.
Phenolphthalein Alkalinity: The alkalinity in a water sample measured by the amount of standard acid needed to lower the pH to a level of 8.3 as indicated by the change of color of the phenolphthalein from pink to clear.
A measure of the total alkalinity in a . The alkalinity is measured by the amount of standard sulfuric acid required to lower the pH of the water to a pH level of 4.
Nephelometric: Method of of measuring turbidity in a water sample by passing light through the sample and measuring the amount of the light that is deflected.
An estimate of microbial density per unit volume of , based on probability theory.
Source: Terms of the Environment
Methyl Orange Alkalinity- A measure of the total alkalinity in a water sample in which the color of methyl orange reflects the change in level.
Wells that are used primarily to remove contaminated groundwater from the ground. Water level measurements and s can also be collected from extraction wells.
Colony Forming Units (CFU): bacterial colonies cultured from a water sample. CFUs indicate the water's level of bacterial concentration.
Volatile solids (VS) is the amount of matter which volatilizes (or burns) when a is heated to 550EC.
Turbidity: A measure of material, usually fine sediments, suspended in water; determined by passing light through a water sample.
A long pipe with a valve at the lower end, used to remove slurry from the bottom or side of a well as it is being drilled or to obtain a from a developed well.
Barium (Ba) ...
monitoring wells : Wells used to collect ground-water samples for analysis to determine the amount, type, and spread of contaminants In ground water.
? Is farming at sea for example seweed-plantations in Sea of Japan.
? Is for example fish farming in the archipelago of Finland.
? Micriobiological composition of s.
Total Dissolved Solids (TDS): concentration of all substances dissolved in water (solids remaining after evaporation of a water sample).
monitoring well A well used either to collect s for purposes of water quality testing, or to measure groundwater levels. MODFLOWA computer code developed by the U.S.
role in living cells makes it an excellent indicator of the presence of living material in water. A measure of ATP therefore provides a sensitive and rapid estimate of Biomass. ATP is reported in micrograms per liter of the original water sample.
See also: Water, Waste, Organic, Environment, Treatment