<prompt> Temporary and permanent hardness of water is removed by -BoilingAddition of limePermutit methodAll  <response>: REMOVAL OF HARDNESS: Temporary hardness: Boiling Addition of lime Addition of sodium carbonate Permutit process Na2 Al2 SiO2 H2O Permanent hardness: Addition of sodium carbonate Base exchange process permutit process Parks Textbook of Preventive and Social Medicine, 25th edition, Page No. 787 