Firefighters are still on site at Christchurch's main wastewater treatment plant, which caught fire yesterday afternoon.
The fire was contained last night, but at its peak, 50 fightfighters were at the scene trying to bring it under control, and a health warning was issued for the smoke.
The wastewater treatment plant serves all of Christchurch City, but officials say it is still operating at its usual capacity.
Fire and Emergency's incident commander Dave Berry spoke to Susie Ferguson.
