Fifteen people are being treated for injuries after a chemical spill at a pool in Upper Hutt.
Emergency services were called to H20 Extreme at about 2pm this afternoon where people had moderate to mild injuries.
Capital and Coast District Health Board said 11 patients were in a stable condition in the Emergency Department.
Fire and emergency said people were struggling to breath which indicates a chemical spill.
It said it brought in extra resources but there was no obvious leak.