WET 'n' Wild Waterpark has yet to open its doors, but it has already boosted Blacktown's economy.
General manager Chris Warhurst recently told business and community leaders at the Greater Western Sydney Small Business Summit 70 per cent of the $115 million in construction work put to tender had been taken up by local businesses.
"Construction work has so far delivered more than $100 million into the local economy and the park would generate in excess of $500 million in economic activity in the first 10 years of operation."
Construction on the 25-hectare site park was on track to achieve the target opening date.
More than 10,000 people had registered for employment information via the website.
Mr Warhurst said applications were being taken for more than 300 positions that would include lifeguards, aquatic attendants, general services, retail and food and beverage workers.
"We are ready to recruit our team to help launch Wet 'n' Wild Sydney for its inaugural season," he said.
"Applicants must be personable, enthusiastic, customer focused and ready to help us deliver an amazing experience for every guest.
"Wet 'n' Wild will also pay for 500 of its job applicants to undergo a surf lifesaving course at Aquatic Safety Training Academy in Seven Hills."