Mr Brooks said he believed Ms Ley was avoiding discussions around the failing Murray-Darling Basin Plan by using the class action as “a poor excuse”.
“She says she can’t speak with anyone involved in the class action, but our advice indicates that’s not correct,” he said.
“In reality, I think Ms Ley and (Federal) Water Minister David Littleproud want to avoid having to confront the mess their government is making of the basin plan.
“They don’t want to talk to irrigators, because they don’t want to hear the truth about what their disastrous plan is doing to our communities.”
Mr Brooks said the legal advice he had received was that “there was nothing that precludes Ms Ley from speaking to the (class action) participants”.
“If she has advice that she cannot speak with the participants, she should make that advice public,” he said.
“Does it come from the Attorney General?
“Ms Ley should be transparent on this issue.”
He said the advice he'd received indicated that Murray-Darling Basin Authority was an independent body that was distinct from the government.