DAWSON Mall was supposed to be the first of Blacktown Council's proposed mega parks.
The ward four mega park is likely to be the last built — and its site is yet to be confirmed.
Councillors deferred a decision on the ward four mega park location earlier this year after hearing concerns about a water-based play area near Westfield and the Mount Druitt Hub.
The three councillors in that ward are yet to make a final decision and have asked for a design assessment of whether Dawson Mall is large enough for a mega park.
Bill Colbourne Reserve at Doonside, Woodcroft, The Waterholes at Mount Druitt and Kimberley Reserve, Rooty Hill, have been mentioned as alternative four ward locations.
"It's been difficult to work out an ideal location but we're leaning towards Dawson Mall," Cr Stephen Bali said.
"It probably wouldn't have water-play elements so people don't go into the shopping centre or library soaking wet. Regardless of where we put it, other areas will miss out. We have one bite of the cherry, so we need to make the right decision."
Each mega park is estimated to cost $1.6 million and will include picnic and playground facilities.
A recent council report has identified funding options for the first two mega parks, to be built at Endeavour Park, Kings Langley and Grantham Heritage Park, Seven Hills.
They would be each be funded by $800,000 from the new major park reserve fund, the infrastructure sinking fund and the reallocation of $1.6 million previously earmarked for the staged embellishment of Grantham Heritage Park.
There will be a community consultation.
Funding sources are yet to be identified for the ward one park at Patersons Reserve, Quakers Hill and Plumpton Park in ward five.
The matter is expected to be debated at next week's council meeting.