Sydney Olympic Park, like a number of other areas along the Parramatta River, contains extensive wetland and saltmarsh areas, which are natural breeding habitats for saltwater mosquitoes.
Saltwater mosquitoes (Aedes vigilax) can reach particularly nuisance levels each year during their breeding season, which takes place in the warmer months.
Sydney Olympic Park Authority in collaboration with scientists from the Sydney University Department of Medical Entomology implements a proactive and extensive mosquito management program aimed to reduce pest mosquitoes on lands under its care to improve comfort levels for people living, visiting and working in the area.
The current mosquito management program undertaken by the Authority involves aerial and ground control spraying activities (with a bacterial larvicide containing Bacillus thuringiensis israelensis; also known as Bti). Spraying activities take place in the mangrove forest and saltmarsh areas of the parklands at Sydney Olympic Park.
The larvicide used in the control program is considered safe to people, pets, other fauna and the environment.
Based on predicted tide data, mosquito helicopter treatment is expected to take place on Newington Nature Reserve Wetland between 6.30am - 10.30am during the following periods (dates marked with * are nominated as a precaution with the likelihood of treatment dependent on a range of factors):
- Tuesday 19 or Wednesday 20 December
- Thursday 4 or Friday 5 January
- Friday 2 or Saturday 3 February
- Friday 2 or Saturday 3 March
These dates are subject to change depending on rainfall, temperature and tide.
View boundary map of where mosquito aerial spraying occurs
Further information about mosquitoes and the management program can be found in the Mosquito Awareness and Protection flyer.
If you have any enquiries about the Mosquito Management Program, please contact the Authority.