Cleaning of trains, buses and other modes of public transport is increasing in preparation for the return of students to school.
Premier Gladys Berejiklian gave details of the initiative while also revealing there have been 11 new coronavirus cases from 5400 tests in NSW in the last 24 hours.
Of the new cases, only one involves an unknown source.
Ms Berejiklian said the government was "preparing in every way possible for schools going back", including "a deep level of cleaning" of public transport.
A large proportion of the previously announced extra $250 million for cleaning would be spent on public transport, with other large allocations "to schools and other public institutions where we know people will be moving around".
"So far, we have employed an extra 550 cleaners across the state as part of that quarter of a billion dollar package and by August we anticipate that number will go up to 3000," she said.
"From May 11 [when a staggered return of all students starts] we will have a better sense of how many adults how many children are likely to use the public transport system," she said.
Treasurer Dominic Perrottet said in a statement the equivalent of 3000 full-time cleaners would be "on board by the end of June".
"The thousands of jobs being generated from our stimulus package is also keeping people in jobs, and businesses in business," he said.
"We're hiring new cleaners, increasing the hours of existing cleaners and redeploying cleaners who would otherwise have lost jobs due to the temporary closure of some public facilities."
Minister for Transport and Roads Andrew Constance said cleaning efforts across the network had increased by over 83,000 hours since March.
"We've introduced a number of new measures to ensure our transport network is as clean as possible with crews working through the night to disinfect trains, buses, metro, light rail, ferries, depots and facilities ready for the morning commute," he said.
"People catching a train might see one of our flying squads get on at one station and wipe down the train before getting off at another station to get on another train to do the job again.
"Or those catching a ferry, might see one of our teams wiping down the Opal readers or cleaning the terminal, making sure people are protected."
Mr Constance said Transport for NSW had distributed about 185,500 litres of hand sanitiser to staff, while 300 hand sanitiser stations across all 165 stations on the Sydney Trains network were available for customers, with the expansion to ferry wharves underway.
"Thousands of personal hand sanitisers and packets of disinfectant wipes have also been distributed to staff at all train stations, bus depots, work sites and offices, including our frontline workers," he said.
Mr Perrottet said small and medium-sized cleaning businesses could apply for supplementary government cleaning contracts through a new business portal.
"A compliant application takes around three days to be processed, with businesses placed on a pre-qualified list for government agencies," he said.
