Pee Kay
No Minister
There will be many people around New Zealand awaiting a hugely significant High Court judgment in the Tau v Attorney-General action, expected before the November 7th election. This case has the potential to spark significant political anxiety, conflict and certain Māori action regarding freshwater rights.
The case concerns Te Maire Tau’s argument that Ngāi Tahu never ceded authority over freshwater and they are seeking a co-governance regime rather than mere compensation. I have no doubt they are actually mean ‘co-governance… for now’.
The Crown maintains that water rights were vested in the state. The ruling on this ‘Ngāi Tahu never ceded authority over freshwater’ and its subsequent Māori customary authority will be legally and politically significant and whatever the verdict, it will trigger immediate appeals.
This is Three Waters via the back door and is going to be a politically charged and significant issue prior to our November election.
The case was heard by Justice Melanie Harland who is regarded as an experienced High Court judge and environmental law specialist. With significant expertise in resource management, she is regarded as a pragmatic judge, recognized for her balanced, highly technical approach to complex statutory disputes.
This is no ordinary court case where a tribal group is “having a go at the government,” oh no. This case is far more than a routine dispute between a tribe and the Crown. The long-term implications of this trial could reshape New Zealand’s political and environmental landscape.
Even though Justice Harland openly noted that there was “merit in the Crown’s argument” regarding the complex statutory limitations on freshwater declarations, surely the government must be planning for the eventuality of a Ngāi Tahu win?
For Chris Luxon, the clock is ticking and the pressure must be immense. His response to a judgment in favour of Ngāi Tahu could very well dictate whether he is still prime minister post November 7th.
Voters who opposed the previous government’s Three Waters agenda will look to Luxon to stand firm on the principle of equal, democratic governance over essential public assets. A resolute commitment he made in 2023. This will be a major test of his leadership and his priorities. Will his government aggressively appeal any ruling that dilutes Crown ownership of water, or will his response signal a passive alignment with the broader Māori aspirations for sovereignty by 2040, as outlined in documents like He Puapua.
‘Sweating bullets’ might just be an understatement.
But the worry over the outcome of this legal action should not only be confined to our prime minister: every New Zealand citizen who holds equality close and democracy dear should be very uneasy!
The outcome has the potential to be a direct threat to the foundational principle of equality in New Zealand. If Ngāi Tahu succeeds, we will see a catastrophic domino effect. This action on behalf of Ngāi Tahu, which was actually heard in the Christchurch court in early 2025, can only be interpreted as an orchestrated strategy by Māori leaders as a giant step to their full sovereignty claims by 2040.
The legal battle over water is not isolated to Ngāi Tahu and nor is it limited to freshwater. This is a highly coordinated, nationwide, multi-front strategy, designed and implemented by Māori leaders. (I can’t help but wonder how much influence and assistance came from Chris Finlayson.) The broader legal campaign unfolding across New Zealand actually extends much further, directly targeting the ownership and control of geothermal resources as well.
A Hawke’s Bay tribal group “Tātau Tātau o Te Wairoa” coincidentally lodged their claim with the High Court in March 2025. Tātau Tātau o Te Wairoa claim they are “taking legal action to protect the freshwater that has sustained our whānau for generations. This case supports Ngāi Tahu’s efforts to ensure the Crown recognises iwi and hapū rights over rivers and lakes, crucial to our lives and culture.” Notably Lake Waikaremoana is included in this claim.
But it’s not only Tātau Tātau o Te Wairoa. Several other major tribal and large Māori collectives have filed parallel legal actions against the Crown regarding freshwater rights.
The country’s third-largest tribe, Ngāti Kahungunu, have formally joined forces with Ngāi Tahu in their High Court proceedings.
Then there is the massive national coalition, Wai Manawa Whenua national coalition who represent over 60 Māori Land Trusts, tribes and sub tribes. They have also filed a landmark parallel lawsuit against the government in the High Court.
This group represents more than 150,000 Māori landowners across the North Island. Their lawsuit, and this is interesting given my recent article “National…the enemy within”, focuses on enforcing a “solemn promise” made in a 2012 High Court affidavit by then Deputy Prime Minister Sir Bill English, who legally acknowledged that “Māori possess explicit rights and interests in freshwater and geothermal resources.”
I’ll say that again: Deputy Prime Minister Sir Bill English, who legally acknowledged that “Māori possess explicit rights and interests in freshwater and geothermal resources.”
The Wai Manawa Whenua national coalition argue the Crown has spent over a decade breaking that promise by locking Māori out of water allocation.
If Māori are authorised to establish a co-governance (for now) regime over South Island fresh waters, a legal precedent will be set that will inevitably see the nation’s entire freshwater supply carved up and transferred into tribal hands.
Let’s break this down to winners and losers in this legal battle.
Obviously Māori leadership, the Iwi Chairs Forum, the Waitangi tribunal and even Ngāi Tahu’s well-paid legal mouthpiece Chris Finlayson all have skin in the game and expect a huge outcome.
But as I mentioned earlier, there are many sectors of our community nervously awaiting the outcome.
Behind many closed boardroom, committee meeting room and dining room doors, a diverse and anxious range of stakeholders will be watching the High Court with absolute intensity, fully aware that a Ngāi Tahu victory will fundamentally disrupt their interests to a lesser or much larger degree.
First among these I suspect will be the multi billion dollar hydroelectric power generators. Some of whom have already felt the greedy hand of Ngāi Tahi in their back pocket. Meridian Energy, Contact Energy, and Mercury rely entirely on unimpeded access to rivers and central North Island geothermal fields to supply our national grid. Imagine the turmoil brought about by the division of management, profits, dividends and, more importantly for Joe Public, will there be payment/cost/pricing based on ethnicity?
Then there would be the manufacturing giants, massive operations like Fonterra and major regional meat and wool processors, such as Silver Fern Farms, Affco or Alliance Group, who require millions of litres of clean water for processing, hygiene, and cooling systems. Major infrastructure mainstays like New Zealand Steel (which consumes substantial water for cooling and processing) must closely watch precedents regarding Crown control versus customary resource rights.
And how do you think international corporations planning huge data centres view a change of ownership of our water? And the commercial water-bottling companies which draw massive volumes of water daily from underground aquifers for international export. Those enterprises will face immediate vulnerability regarding the security of their long term water allocations.
Federated Farmers and other farm lobby groups are going to be highly alarmed, concerned that a Māori victory would, most likely, disrupt existing water consents when they were due for renewal, commercial irrigation of arable crops could face restrictions, fees and burden farmers to navigate mandatory and arguably redundant, and completely superfluous, cultural impact assessments.
Regulatory bodies like local councils and regional authorities face the reality of having their statutory planning powers diluted or completely overhauled under a mandatory co-governance model. A shift to a co-governance or even a ‘co-management’ regime will directly alter the statutory powers of these bodies.
And lastly, there is us, everyday New Zealanders, the general public, the recreational users of our waterways. We, too, have a, not too dissimilar to Māori and their ancestral use, long and hardy investment in how any new ownership of freshwater might impact our access to rivers, lakes, and waterways.
Water is a universal necessity and it is not a commodity to be divided along ethnic lines. To yield control of New Zealand’s most vital public asset to tribal interests is to trigger a dangerous constitutional crisis. A crisis that actively dismantles the democratic rights of everyday New Zealanders and strips them of an equal say in their own country’s future.
If Ngāi Tahu win their case, it won’t just alter a resource allocation: it will permanently fracture our legal system into a two-tier regime and shred any hope that New Zealand harboured of, once again, becoming a unified nation.
I certainly do not envy Justice Melanie Harland. The weight of New Zealand’s future could actually rest on her shoulders.
This article was originally published by No Minister.
