A key stakeholder in the development of Bluff’s new wastewater system has issued a warning against moving too fast.
Treated discharge for the town of about 1800 is released into Foveaux Strait through an outfall pipe.
But the consent for that set-up will expire in December 2025, prompting Invercargill City Council to reassess the situation.
Bluff Community Board has also supported that method, but requested the Fast-track Approvals Bill not be considered.
That was because environmental concerns could need a robust, transparent process, board chairman Ray Fife said.
At a committee meeting this week, Mr Fife also shared a range of other concerns his board had
including replacement of UV light systems to better treat bacteria, exploring extension of the outflow pipe, and adhering to regulation.
He called for "constant monitoring" of seawater and kaimoana, with regular reporting.
A working group has been developing the new consent and project for nearly a year already at a cost of more than $750,000.
The proposed move to transport waste through a wetland before discharging, means it would contact land before entering the ocean — a move with cultural benefits.
The model would still make use of the Bluff Wastewater Treatment Plant which was built in 2000.
While discharging wastewater to land was explored, it was deemed not feasible because of cost and issues with potential sites.
On October 29, a full meeting of the council will consider if the matter warrants public consultation.
A recommendation will be made to request staff to proceed with concept designs for the wetland approach, as well work on consent.
The whole-of-life cost for the wetland option has been listed at more than $15 million.
• LDR is local body journalism co-funded by RNZ and NZ On Air
