The fire service worked through the night to assist with the pumping of toxic water from a disused mine near Truro.
Pumps are currently at full capacity at Wheal Jane. Levels are still rising, but at a slower rate than yesterday.
There are fears that rising levels could pollute the nearby river and Fal Estuary, a marine special area of conservation, although there has been no pollution so far.
More top news
A ship from a West African country hit by the deadly Ebola virus will be docking in Falmouth next month.
Disgraced West Country cyclist Jonathan Tiernan-Locke was back in the saddle yesterday, taking on the Exmoor Beast Cycle Ride.
Plymouth Argyle were the region's only winners as they beat in-form Carlisle 1-0 at Home Park. Yeovil and Exeter City both drew.