The council says the organisation is treating as it as ``a second-string player''.

Those were the words of council's general manager, Dave Walker, in a report tabled at last week's meeting.

Mr Walker referred to a recent media release in which the regional council grouping indicated its support for a toll increase for the M2, while advocating the removal of tolls on the M4 and M5, as one of the main reasons the council should abandon the organisation.

Membership also costs Hills ratepayers $64,759.65 per year.

Mr Walker also pointed to the organisation's alleged lack of support for the North West Rail Link.

``A recent Four Corners program strongly supported the need for the North West Rail Link. There was no response from WSROC in support, yet at the same time, they issued two media releases criticising the University of Western Sydney for removing a particular course,'' Mr Walker said.

The report recommended council formalise ties with Hawkesbury and Hornsby Council rather than leaning on an organisation ``which does not represent council's future or potential.''

The council group's president, Alison McLean, said the North West Rail Link had always been a major priority for the organisation.

`` I hope The Hills Shire Council will reconsider its decision to resign,'' Ms McLean said.