safe and acceptable for human consumption. When such water is taken, it
promotes and uphold good health.
or portable water can also be define as water that is:
contains a lot of impurities and when consumed, predisposes man to series of
ill-health conditions. That is water said to be unwholesome when it does not
fulfill the criteria of wholesome water.
production of food and drinks, it can contaminate water which will in turn be
passed to the consumers.
mortality arising from complicating of water related diseases.
maintenance which in turn may give the industrial and entire aesthetic value.
water to be safe and acceptable for drinking, that is, portable, it must posses
some basic characteristics.
caused by inorganic substance organic matter such as algae product, micro-organism
by product, decomposing organic matter.
caused by dissolved salts both organic and inorganic substance.
or suspended practices. Turbidity is the measure of the clearity of water.
Turbidity in water is caused by suspended and dissolve particles with the
passage of light though water.
Portable water must be colourless, colour in water is caused by natural decay
of organic matter (leaf, wood, pest) and industrial waste and domestic waste.
water should not contain disease carrying organism e.g. bacteria, protozoa,
virus and fungus. Coliform organisms are used as indicators of recent faecal
pollution and drinking water should not contain E. coli in 100ml of water
tested. A high coliform count of 10 coliforms per 100ml or more is regarded as
being suspicious and bad.
wholesome water should be free from
substance which causes hardness, such as calcium and magnesium carbonate,
calcium sulphate, calcium chloride, magnesium sulphate etc.
water should contain a lot of dissolved oxygen.
lot of chloride as this depicts sewage contamination.
water should be free from poisonous substances e.g. Nitrates, fluorides etc.
too alkaline, and not too acidic.