URINARY SYSTEM IS THE MAIN EXCRETORY SYSTEM OF HUMAN BODY. IT FLUSHES OUT WASTE PRODUCTS THROUGH URINE. HENCE 4-5 LITRES CLEAN DRINKING WATER IS ADVISABLE IN A NORMAL HEALTHY PERSON ( NOT FOR CARDIAC AND RENAL FAILURE CASES ). ANY PROBLEM ASSOCIATED WITH THE SYSTEM STARTING FROM KIDNEYS, BLADDER , PROSTATE , TESTES , PENIS , ARE EVALUATED PROPERLY AND MANAGED ACCORDINGLY .