Queensland Urban Utilities is investigating the cause of a sewage spill in Bulimba Creek at Mansfield.
Queensland Urban Utilities was advised on 11 September by a resident of a small number of dead fish found in the creek.
Crews investigated and found indications of a sewage overflow from two upstream sewer maintenance holes off Kane Street, Mansfield.
The cause of the overflow is being investigated and a clean-up was undertaken.
A follow-up inspection on 13 September showed an improvement in creek water quality, with “spot tests” showing normal ammonia and dissolved oxygen levels.
Queensland Urban Utilities is continuing to work with Brisbane City Council and the Department of Environment and Heritage Protection (DEHP) to address the matter.
Signs warning people to avoid the area were erected as a precaution and will remain in place for two weeks.