Queensland has been put on high alert after coronavirus was found in sewage at a string of wastewater treatment plants, including three in Brisbane.
Viral fragments of the virus were detected at facilities in the state capital, as well as those servicing Hervey Bay - such as one in Maryborough.
In total, seven plants showed evidence of the virus - Caboolture South, Oxley Creek, Bundamba, Gibson Island, Luggage Point, Maryborough and Pulgul.
While it is not unexpected for the virus to be detected in Brisbane's waters, due to infections in hotel quarantine, the other plants are a cause for concern.