Write the various steps for the purification of municipal water supply.

 Ans-:

S.No.	Impurity	Process used for removal
1. 2. 3. 4. 5.	Floating matter such as leaves , wood pieces etc. Suspended impurity such as sand , clay etc. Fine suspended inorganic matter. Microorganisms and colloidal impurities Pathogenic bacteria	1)Screening 2)Sedimentation 3)Sedimentation with coagulation 4)Filtration 5)Disinfection