Drinking water is of greater importance in day to day life, but yet its quality makes the huge difference to intake water. Quality of water is referred to its physical, biological, chemical and radio logical characteristics. Following are the basic parameters to check the quality of drinking water: Oxygen content: the amount of dissolved oxygen need to be checked, as most aquatic organisms in water require water to survive and grow. Some species in water require high dissolved oxygen content in water, other species like catfish, worms and many others do not require any dissolved oxygen content. Deficiency in oxygen content also leads to the death of juveniles and adults, a reduction may take place in growth, it may also lead to failure of eggs and harm the survival and it completely changes the presence of species present in a water body. Temperature: it is the measure of average energy molecules in water(kinetic energy), the measurement is done with the help o...