<P> The following is an episode list for the Australian television show H O: Just Add Water, which first aired on Network Ten in Australia and has since been broadcast in more than 120 countries worldwide . Series one premiered in Australia on 7 July 2006 and series two began there on 28 September 2007 . The third series premiered in the United Kingdom on 26 October 2009 while its Australian premiere occurred on 22 May 2010 . </P> <Table> <Tr> <Th_colspan="2"> Series </Th> <Th> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> Series premiere </Th> <Th> Series finale </Th> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 26 </Td> <Td> 7 July 2006 (2006 - 07 - 07) </Td> <Td> 29 December 2006 (2006 - 12 - 29) </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 26 </Td> <Td> 28 September 2007 (2007 - 09 - 28) </Td> <Td> 21 March 2008 (2008 - 03 - 21) </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 26 </Td> <Td> 26 October 2009 (2009 - 10 - 26) (UK) </Td> <Td> 16 April 2010 (2010 - 04 - 16) (UK) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Series </Th> <Th> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr>

How many seasons of h2o just add water are there
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