These regions were also intended to be a vehicle for federal funding for local services and infrastructure to bypass the largely non-Labor state governments of the time.
These largely centred on the failure of state governments in the postwar era to provide infrastructure and services such as hospitals, public transport and tertiary education to match the region's rapidly growing population.
The organisation's advocacy has probably been least effective in relation to persuading state governments to make major investments in the region's public transport infrastructure, though WSROC was involved in the successful campaigns for the Westlink M7 Motorway, the South West Rail Link and the North West Rail Link which have been completed.
On 8 November 2023, ABC News reported that WSROC has called on the NSW Government to move the deadline for food and organic waste (FOGO) collections to 2035.
The work program centres on WSROC's primary role – to lobby for the councils and communities of Western Sydney – but the organisation also undertakes a number of other "typical" ROC roles such as regional project development and management, resource sharing between councils and supporting regional joint purchase initiatives.
"Our mission is: to secure – through research, lobbying and the fostering of cooperation between councils – a sustainable lifestyle for the people of Western Sydney and the provision of infrastructure such that no one should have to leave the region to have access to the sorts of amenities, services and opportunities others in urban Australia take for granted."