I (Kelly) used to know where. I got my episodes from diwana(DOT)org, but unfortunately that site isn’t available anymore :/
The only thing I can suggest is torrent sites like Pirate Bay or something of the sort.
If you just want to watch Blue Water High Season 3, episodes can be found here.
Sorry, I wish I could be of more assistance.
If anyone knows of any other sites where BWH S3 is available, let us know, so we can help this anon out! :)