Water comprises three-fourth of the earth’s surface. This means that water is the most easily available natural resource to mankind. This fact is indeed true but the water that most of us receive is not pure. The water is not only impure but also carries several disease carrying germs and viruses in it. So to make sure that the people receive clean water in their residences the water tanks in which water is stored should be cleaned. These water reservoirs need to undergo a proper treatment by some commercial water tank cleaning services .