Mounting questions over a controversial $80 million dollar water buyback are threatening to derail the Coalition's election campaign, prompting fresh calls for a Royal Commission into the Murray-Darling Basin Plan.

In 2017, a company co-founded by Energy Minister Angus Taylor and linked to the Cayman Islands sold two Queensland water licenses to the Federal Government.

Water experts say the licenses were over-valued and unlikely to have significant environmental benefits, but the Department of Agriculture insists they represented value for money.



Former Deputy Prime Minister Barnaby Joyce was the Minister for Agriculture and Water who signed off on the purchases.

Guest:

Barnaby Joyce, The Nationals Member for New England