Contaminated water from a fire at a frozen food factory at Wingfield has been flowing into wetlands in northern Adelaide.
The fire at Rand Refrigerated Logistics is estimated to have left a damage bill of up to $10 million.
The company has moved to offices nearby and says frozen food supplies to supermarkets will not be disrupted despite the loss of stock.
Clive Jenkins from the Environment Protection Authority says water used to fight the blaze is now contaminated as it flows into the Barker wetlands.
“The quality of the water was mainly organic chemicals in nature, dairy products and plastic containers,” he said.
“The wetland is well and truly capable of assimilating those so there’s very little risk.”
The Metropolitan Fire Service says the blaze smouldered all weekend but is finally out.