“The Animal Health Board (AHB) can report that no 1080 residue was found in any of the water samples,” says Chris Pullen, AHB West Coast/Tasman Programme Manager.

“More than 70 samples were taken to reassure landowners that the measures used to determine exclusion zones work effectively. The samples were taken within 24 hours of the completion of the aerial bovine tuberculosis (TB) control operations.

“They were then delivered to Landcare Research and tested for 1080 residue of which none was found.

“The test results come as no surprise because West Coast water supplies were excluded from the aerial operations. The use of advanced GPS technology allows our contractors to utilise very accurate flight paths to determine precise exclusion zones.

“Members of the public must continue to take notice of the warning signs that have been erected at the operational areas.

“These signs clearly state what poison has been used and indicate how long the area will remain out of bounds, particularly for dogs.

“Possum carcasses present a risk to dogs, which should be kept out of the operational area for at least six months.

“The combination of aerial and ground based pest control is a vital part of the AHB’s strategy for controlling TB in New Zealand.

“We extend our thanks to landowners in the operational area for their cooperation and willingness to protect the region’s economy from the threat of TB,” Mr Pullen said.