Find out about current and upcoming weed and pest control work

Effective pest management depends on collaboration. We consult with a range of interested groups when planning control programmes, including neighbouring landowners, district and regional councils, iwi, advocacy groups, and the local community.

Before undertaking any control work, we notify the public by:

  • putting up signs near the affected area
  • publishing notices in local newspapers
  • broadcasting notices local radio
  • posting information on this website.

Most of our control work is weather dependent, so advertised dates may change at short notice. We try to avoid carrying out any spraying on weekends or during public holidays.

The table below provides detailed information about our aquatic weed control work. You can find more information about all our biosecurity programmes in the related content.

Aquatic weed control status for lakes in New Zealand as at 10 December 2019

Control SiteScheduled date of control:Treatment was completed on:Is this site safe to swim at  today?Date site is safe to swim at from:Is this site safe to gather food from today?Date site is safe to gather food from:Is this site safe to take water for irrigation or domestic purposes today?Date site is safe to take water for irrigation or domestic purposes from:
Lake Karapiro        
Zone 310/12/1910/12/19Yes11/12/19Yes11/12/19Yes11/12/19
Zone 410/12/1910/12/19Yes11/12/19Yes11/12/19Yes11/12/19
Zone 510/12/1910/12/19Yes11/12/19Yes11/12/19Yes11/12/19
Zone 610/12/1910/12/19Yes11/12/19Yes11/12/19Yes11/12/19
Zone 710/12/1910/12/19Yes11/12/19Yes11/12/19Yes11/12/19
Zone 89/12/199/12/19Yes10/12/19Yes10/12/19Yes10/12/19
Zone 99/12/199/12/19Yes10/12/19Yes10/12/19Yes10/12/19
Zone 129/12/199/12/19Yes10/12/19Yes10/12/19Yes10/12/19
Lake Rerewhakaaitu        
Homestead Arm28/11/201929/11/2019Yes29/11/2019Yes29/11/2019Yes29/11/2019
Lake Rotoiti        
Gisborne Point25/11/201925/11/2019Yes26/11/2019Yes26/11/2019Yes26/11/2019
Cherry Bay/Okahutoroa Bay25/11/201925/11/2019Yes26/11/2019Yes26/11/2019Yes26/11/2019
Otaramarae Boat Ramp25/11/201925/11/2019Yes26/11/2019Yes26/11/2019Yes26/11/2019
Okere Inlet25/11/201925/11/2019Yes26/11/2019Yes26/11/2019Yes26/11/2019
Okere Inlet / Campground25/11/201925/11/2019Yes26/11/2019Yes26/11/2019Yes26/11/2019
Kakaho Bay25/11/201925/11/2019Yes26/11/2019Yes26/11/2019Yes26/11/2019
Te Ti Bay25/11/201925/11/2019Yes26/11/2019Yes26/11/2019Yes26/11/2019
Lake Rotoma        
Whangaroa Bay Boat Ramp29/11/201929/11/2019Yes30/11/2019Yes30/11/2019Yes30/11/2019
Matahi Boat Ramp29/11/201929/11/2019Yes30/11/2019Yes30/11/2019Yes30/11/2019
Lake Rotorua        
Kawaha Point26/11/201926/11/2019Yes27/11/2019Yes27/11/2019Yes27/11/2019
Lake Tarawera        
Otumutu Lagoon/Humphries Bay27/11/201927/11/2019Yes28/11/2019Yes28/11/2019Yes28/11/2019
Te Rātā Bay/Hot Water Beach5/12/20195/12/2019Yes6/12/2019Yes6/12/2019Yes6/12/2019
Lake Okareka        
Acacia Bay27/11/201927/11/2019Yes28/11/2019Yes28/11/2019Yes28/11/2019
Last Updated: 10 December 2019