Napier's Mayor Bill Dalton said the decision had already been made.
"The council has made the decision to move the pool to the new site."
Council currently has a plan to move the aquatic centre to a new location on Presbensen Drive.
The new centre will cost $41 million, and will be based on the QEII design in Christchurch.
It would include a 25m pool, a learner pool, a programme pool, two spa pools, a gymnasium, a café, and a water play area featuring an accessible pool, bomb pool, hydroslide, and splash pad and water toys.
The petition suggested the aquatic centre should remain at Onekawa, but be updated with a 50 metre pool.
Kamper said the current site was part of a social hub, which the Presbensen Drive site lacked, including that Onekawa was close to schools, the Omni Gym and Onekawa shops.
A spokesperson for Napier City Council said they were unable to comment on the situation until after the petition was presented.
The petition is due to be presented to council on October 16.
The new Aquatic Centre at Presbensen Drive is included in the council's Long Term Plan, and is due to be completed in two and a half to three years.