Raw sewage has started to leak into floodwaters on the Darling Downs, further contaminating the murky water and putting residents at risk of infection.
Southern Downs Regional Council said wastewater treatment plants at Warwick and Stanthorpe had been compromised during the flooding and there had been multiple spills from pump stations and manholes.
Locals are being urged to stay out of floodwaters as there is a high risk of infection from the contaminated water.
"If you've been in contact with floodwaters, you should decontaminate hands and clothing by washing thoroughly with soap and water," Southern Downs Mayor Tracy Dobie said.
