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INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XV, Issue V, May 2026
Water is addressed as a necessary resource and life preservative, it is required for most human activities like
drinking, cooking, bathing, washing, agriculture, industry, recreation, navigation and fisheries etc. The water for
human consumption and other domestic purpose should be free from disease causing organisms, poisonous
substances and excessive amount of mineral and organic matter. It should also be free from colour, turbidity,
taste and odour, (Rim- Rukeh, 2013). The water and water resources are very important for maintaining an
adequate food supply and a productive environment for all living organisms. As there is increase in human
population and economic grow, global freshwater demand has been increasing rapidly. Water is essential to life
because it heavily influence public health and living standard. It is a very important required substance in order
to sustain vital activities of human beings such as nutrition, respiration, circulation, excretion and even
reproduction.(Akin, 2007). It is a biological solvents that provides both the transport and dissolution of vitamins
and minerals in the body. The water is important in regulating body temperature, facilitates the work of the
kidneys and other organs. It protect and act as a cushion and plays a fundamental role in moisturizing the skin,
removing toxins and cleaning the body. It also supports the conversion of nutrients taken into the body in the
form of energy and also helps the absorption of nutrients. It is the main ingredient of carbohydrate, fats and
proteins in the human body. About 80 – 90% of our blood and about 75% of our muscles are made up of
water.(Cepel, 2003). It is an indispensable element of life and we feel uncomfortable when we are dehydrated
even for a very short time.so water is very precious and a very blessed gift from above.
MATERIALS AND METHODS
Hydrogen ion Concentration (pH)
The HANNA-pHep is a digital pH meter that can be used to estimate the hydrogen ion concentration or pH of
solution. This device is designed to be portable and easy to use, making it suitable for field work. It has a pH
range from 0.0 to 14.0, a resolution of 0.1 pH and an accuracy of ± 0.1 pH. The digital pH meter HANNA-pHep
was utilized for estimating hydrogen particle concentration (pH) by plunging the electrode into experimental
water in clean beaker at the sampling station. This pH meter was previously calibrated in the laboratory utilizing
various buffers.
Dissolved Oxygen
The determination of dissolved oxygen content of lake waters the unmodified Winkler’s technique gave the most
satisfactory result. Water was sampled in a 250 ml measuring flask with least disturbance of surface water and
no air bubble. The stopper of the bottle was carefully removed. One ml of manganous sulphate (MnSO
4
, 4 H
2
0)
reagent and one ml of alkaline reagent (KOH and KI) was added by means of one ml pipette dipped to the bottom
of the bottle and slowly drawing out as the reagents were added. The stopper was replaced and the bottle was
inverted three or four times for a thorough mixing of the reagents, producing a flocculant precipitate of light
brown colour. One ml of conc. Sulphuric acid was added to dissolve the precipitate, leaving a clear brown
solution. To 50 ml of this solution .025 N sodium thiosulphate solutions was run drop by drop thereby changing
the colour of the sample solution to pale yellow. One ml of starch solution (indicator) was added to it to give the
solution a blue colour and the titration was completed by turning it colourless.
Number of ml of Na
2
S
2
O
2
solution X 4 = ppm of dissolved oxygen.
Free Carbon - di – oxide
50 ml of the water sample was taken and 2 drops of phenolphthalein indicator were added to it. It was titrated
with N/ 44 sodium hydroxide solution which was standardised against sulphuric acid solution of equal strength
with phenolphthalein as an indicator. The alkali was run slowly till the colour of the sample turned pink.
Number of ml of N/44 sodium hydroxide consumed X 2 was equal to parts per million of carbon – di – oxide
present in the water sample.