Water Quality Is Essential For Human Life And The Health Of The Environment

1428 Words May 19th, 2015 null Page
Water Quality
Water is essential to human life and the health of the environment. Good water quality is essential for irrigation, drinking and recreation and also sustains ecological processes that support native fish populations, vegetation and bird life. We expect that our water supply will not only be safe, but will taste good, and look crystal clear.
Water quality is commonly defined by its physical, chemical, biological and aesthetic (appearance and smell) characteristics. Water quality supports a rich and varied community of organisms and protects public health is referred to a healthy environment.
The following methods are used to determine water quality;
Concentrations of common ions
Total dissolved solids
Total dissolved solids (TDS) measures water purity. TDS are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, the results are expressed in, per unit volume of water (mg/L), also referred to as parts per million (ppm).
Total dissolved salts can be measured by, evaporating a water sample in an evaporating dish, and weighing the residue, or by using a probe, as most dissolved solids are ionic salts, and the salts increase the conductivity of the water. It is able to be measured by the electrical conductivity (EC) test.

Hardness
Hardness is determined by the amount of dissolved 〖Ca〗^(2+) and 〖Mg〗^(2+) ions present in water. Large amounts of these ions can clog pipes and prevent the lather of soap. This…

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