First Up - The Podcast, Wednesday 21 May

On today's First Up pod: a signed copy of Taylor Swift's latest album is up for grabs on Trade Me, in CD format - so you might want to also bid on an old CD player there too; and do you use a water filter at home? Our reporter Ke Xin Li visits an Auckland water treatment plant to see how they clean up what falls from the sky to make it safe for drinking. First Up - Voice of the Nathan!