Eradicating bovine TB in NZ

As part of our TBfree programme we deliver our pest control operations through a framework of TB management areas (TMAs). TMAs are areas with known TB infection in livestock or wildlife. Each TMA has a specific TB control plan designed to eradicate TB as effectively as possible.

Map showing boundaries of South Westland Alps TB management areaThe South Westland Alps TMA

The South Westland Alps TMA lies adjacent to the Main Divide and extends south from Arthur's Pass to just beyond Whataroa. The TMA contains the high-risk catchments for the Waitaha, Poerua and Wanganui Rivers.

The habitat includes bush-covered faces interspersed with glaciers.

History of TB and pest control in South Westland Alps

The eradication control plan in the South Westland Alps TMA has just started.

TB has been found in wild venison recovery deer and subsequently in possums surveyed in the valley floor below where the deer had been captured. A survey by Manaaki Whenua — Landcare Research in 2021 confirmed the prevalence of TB in possums is very high and aerial control is required.

We undertook aerial control in the Upper Wanganui, Wilburg Range and Upper Waitaha blocks in 2022.

Aerial control in the Upper Taipo block is scheduled for completion in June 2022.

Current state

There are no herds within the South Westland Alps TMA, but this TMA is a confirmed source area for TB infection in the Hari Hari area.

Future pest control operations

We plan our pest control operations up to 3 years in advance. The current year runs from July 2022 to June 2023.

Dates and control methods for pest control operations in the South Westland Alps TMA are provisional and subject to change. If you’re affected by any upcoming operations, our pest control contractors will contact you before work begins. They will:

  • talk you through the specifics of each operation
  • explain what you need to do before the operations start
  • get your consent for the work to be done.

We will refine proposed boundaries for aerial operations after consulting with landowners and affected parties.

Type of controlWhenCoverageWhere
Aerial control2022/202335,400haMungo, Whitcombe, Newton Range, Upper Kokatahi, Upper Toaroha

Map of 2022/2023 pest control operations

The proposed areas for aerial control are marked on the map in yellow.

Interactive map showing South Westland Alps TB management area boundaries, Vector Control Zone, and proposed control areas


Vector Free Marlborough manages eradication activities in the South Westland Alps TMA. Contact them directly if you have feedback or questions about upcoming operations.

Vector Free Marlborough Limited

Phone: 0508 548 008

Nearest local OSPRI office

OSPRI Christchurch Office
PO Box 8674
Christchurch 8440
Phone: 03 363 3090