Iron bacteria in our waterways

Iron bacteria, or iron-oxidizing bacteria, are microorganisms found in South-East Queensland waterways. The bacteria create a rust-coloured sediment which may sometimes be mistaken for a sewage or petrol spill. 

The sediment can discolour nearby surroundings but there is no evidence it is harmful to the environment.

Chemical process of iron bacteria

The bacteria blooms during dry periods when water is still and stagnant.

The bacteria feed on iron in the water, turning it into energy. This process leaves behind a slimy deposit of iron oxide, also known as rust. The water may also have an oily sheen.

Reporting environmental problems to Council

It is important to remember that iron bacteria are not harmful to people or the environment.

While iron bacteria does not need to be reported, if you have concerns regarding local waterways, contact Council.