What the Duck River means for Granville
A long green corridor
Cumberland City Council calls the Duck River Parklands the largest green corridor in Cumberland. Its masterplan says the river corridor runs for over 10km from the Parramatta River, with about 4.5km of it the council's main focus, and quotes a vision for a walking and cycling link through Granville.
Wetlands and salt marsh
The City of Parramatta says wetland areas within Duck River are of regional conservation significance, and its nature trail avoids the salt marsh on the foreshore. Saltmarsh mosquitoes were the biggest share of the metropolitan Sydney catch in NSW Health's 2024 to 2025 trapping.
A trap on the river
NSW Health lists a Duck River trap site under Parramatta, where Barmah Forest virus turned up in trapped mosquitoes on 18 March 2025. A virus in a trap isn't a human case, and no pest business can prevent disease, so NSW Health is the place for current advice.
Two councils
Cumberland lists Granville and South Granville in its wards, and the City of Parramatta shares Granville in its Rosehill Ward.
Is it bees or wasps?
Cumberland's backyard guide has a handy split. For bees, look for a beekeeper or a local beekeeping association. For a wasp nest in a busy part of the house or garden, it says not to try removing it yourself, because that can lead to injury. Keep people and pets away, and if anyone has trouble breathing after a sting, call 000.
Possums, pigeons and food scraps
The council says land clearing and development have pushed many possums into house roofs and walls. They're protected, so the job is proofing and, where it's needed, lawful catch and release.
It also lists pigeons among the nuisance animals common across Sydney, and asks people not to feed them or leave scraps and pet food lying around. For birds on a balcony, ledge or roof, see bird proofing in Sydney.
Renting in Granville?
Generally, NSW landlords are responsible for pests at the start of a tenancy, and tenants for pests that come later and are caused by their own activities or lack of cleanliness, such as rubbish attracting cockroaches, ants or mice. If pests got in another way, say through a hole in the wall, the tenant may not be responsible. Still stuck? NSW Fair Trading can help with disputes.
If it were our place in Granville
Clear standing water at home before you blame the river, and leave the wildlife to do its thing outside. If something's living in the roof or a nest is near a door, pick it on this page and add your postcode.
Want someone to look at it?
Tell us what you've seen and your postcode, and a local pest business that handles exactly that calls you to talk it through.
