It is where the water filtration takes place and the hard water is softened by removing calcium and magnesium. Sarasota FL 34240 888 378-9021 phone Phone Number. How A Water Softener Works And Why You Might Want One Water Softener Water Purification System Water Softener System Your brine tank must work properly at all times since it contains a solution that helps to replace calcium and magnesium ions for sodium ones. Water softener brine tank . Ad Easy One Man Set-up. The brine is used to recharge or regenerate the media beads. The more water that is in the brine tank the more salt it absorbs during each regeneration. Weak brine tank draw - weak water flow at the brine tank drain. Ad Find Water Softner and Related Articles. Water Softener efficiency also comes into play. This is because the water needs to touch the salt so that it can absorb it and create the correct concentration of brine. Ad Find Water Softner and Related Articles. Water softener does not draw ...