Len Brown says if he is re-elected Mayor of Auckland he will revive plans to make entry to the council's swimming pools free regionwide.
Mr Brown succeeded in his first term to make entry to pools for children 16 and under free, but a majority of councillors baulked at scrapping charges for everyone.
Some local boards in South Auckland maintained the free-pool policy of the former Manukau City Council through a special rate.
A study by KPMG put the cost at $5.5 million based on figures for six of the city's 24 swimming pools.
Sponsorship and partnerships will be investigated to minimise the cost on ratepayers, said Mr Brown, who has also promised to cut next year's rates rise to 2.5 per cent.