Massey University freshwater ecologist Dr Mike Joy is all for Water Conservation Orders (WCO), and says if any region needs one, it's Hawke's Bay.
There are currently 15 rivers across New Zealand that have had WCOs placed on them, and applications are under way for a further three including that for the Ngaruroro and Clive Rivers.
WCOs were a tool to preserve such waterways for everybody, he said, something that was not a priority for those using the water for commercial use.
"People currently in business think they should have rights over future generations - It's one-sided, it's all about making money now and to hell with the effect it is having downstream on areas such as the river mouth and estuaries."
He said much of the opposition to such orders arose because people did not want their current incomes and lifestyles threatened, but at the same time these people were not willing to face the consequences their activities could have in the future.