The Member for New England, Tony Windsor, is lobbying the commonwealth to take a stand against the New South Wales government over plans to mine coal on the Liverpool Plains.

Mr Windsor raised the issue in parliament this week, renewing calls for an independent water study into what impact it could have on subterranean acquifers.

“We have to have more knowledge of these groundwater systems and the inter-connectivity things I’ve raised otherwise we run the risk of looking back and saying why didn’t they do something.”

Mr Windsor says any impact on water systems downstream needs to be known, before the state government grants any more exploration licences.