I just bought a wizard super 5. I need a water pump for it Does anyone know where i can get one

Do you mean the rubber impeller or the metal pump
component(s)?
East Coast Marine Old Mercs (and other vendors) should carry rubber impeller.
Good used metal parts probably available from (online) vendors who buy old motors and sell their parts. Several are listed on this site.
Good Luck
Louis

http://store.oldmercs.com/product_p/47-22748.htm

Here is another option:

http://www.marineengine.com/newparts/part_search.php?part_num=47-22748&x=5&y=8

http://www.discountmarinesource.com/p-29348-sierra-impeller-18-3012.aspx

18-3012 is supposed to be a replacement for 47-22748
$15.95 with shipping.