Sue Grey, a lawyer representing the complainants said it's insulting to allow waste being dumped without locals' consent.
"There are the family groups, the hapū there, who weren't consulted with and they need to have a proper chance to explore all of the issues thoroughly, so everyone understands what's proposed and what the effects might be of that," she said.
"This is a case which shows that a community can courageously stand up and do what needs to be done to raise awareness and protect their environment. It's worth people making the efforts to do that."
The Authority said in a statement that it noted the decision by the High Court.
"We will fully consider and digest the Court's decision before making any further comment," the statement said.
RNZ has approached CRL for comments.
- RNZ