One person was taken to hospital in a serious condition after a chemical incident at the Levin Aquatic Centre today.

A total of 32 people were assessed by ambulance staff after the incident forced the public pool to be evacuated.

Five fire engines and police were at the scene.

A Fire and Emergency spokesperson said chemicals mixed together in a pool and started fuming.

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He said everyone was now out of the building and in the fresh air.

They were unable to confirm what the chemicals were.

A Hazmat team is on its way from Palmerston North.

FENZ crews are setting up to investigate the cause of the chemical reaction.

Emergency crews were called at 11.50 am.