Knowing the ins and outs of your sump tank's cleanliness and regular checks will help you extend its life, which in turn will help you live a healthy life at Home, our most lovely place on earth. Sump tanks are primarily used as water storage tanks for Residential and commercial applications. Most are constructed underground to store borewell water, so we can pump it to an overhead tank and use the Sump water for utility and gardening purposes. Keeping the sump clean and healthy is essential for our health and happiness.