Glyphosate Testing

The Council has a resource consent from Environment Canterbury to spray watercress, monkey musk and veronica with the herbicide glyphosate in our waterways. Approximately 8 to 10% of spring-fed drains are sprayed every year at a cost of about $15,000. 

Community concerns have been brought to the Council’s attention regarding the use of glyphosate, especially over water. The Kaiapoi Community Board has recommended the Council approves the use of mechanical means rather than spraying to control weeds. This could potentially cost an additional $80,000 to $100,000 per year or $4 per property per year, to manage spring-fed waterways across the district. It would cost approximately $525,000 to
$945,000 per year, or $20 to $40 per property per year, if all drains and waterways were cleaned this way. We’re proposing to retain our current approach to the maintenance of  waterways and drains.