Water is the universal solvent, this is what we all have learnt in school and we all know it is the truth. Without water life would never have existed on this planet. It is this greatest treasure on the planet which has been to sole reason of the evolution of life. There are nine planets that have been discovered and hundreds of undiscovered planets in the solar system. Every one of them is nothing but a compilation of minerals and barren lands unlike the planet earth which has everything. In fact it has more than everything as it has water which is not present on any other planet and also it has life which makes it the most distinguished planet in the entire universe.

Today the biggest problem that is being faced by the inhabitants of this planet is the protection of this unique gift, water. Since our planet is known to be made of 75% of water, but only 2 – 3% is fit for human use while the rest is present in the form of seas and oceans which are heavily contaminated with minerals that make it beyond human use unless filtered and treated which is a very expensive task. And there are also no plants huge enough to filter the entire ocean. The use of clean water needs to be restricted and controlled. Every step that ensures no wastage of water should be taken and a very fine example is the use of liquid level indicator in the factories to keep a check on water and other liquids too.

The huge demand of the factories can easily suck all the water from the cities if they are allowed to use it without control. To ensure that the factories use the resource within a limit, special governmental institutions keep checking the factories regularly. They check the water tanks where the water is being stored and also the ways water is being disposed off. It is strictly prohibited to let the factory’s toxic water fall in the water lines that supply clean water. Septic tanks are used to store the waste water and then are emptied by the trucks that are fitted with powerful suction pumps. The trucks carry the toxic water to a landfill where the water is emptied. By using the ultrasonic level indicator, the level of waste water in the septic tanks is measured and emptying it can be planned accordingly. It is believed that if water is not protected, a time will come soon when this planet would also become like the others in the universe without life.