Sunbury Recycled Water Plant Ammonia issue

Over the course of the last week, the testing results from our Sunbury Recycling Water Plant have returned to within normal range. No additional actions are required at this point.

Our routine operations, including testing and monitoring of the plant and Jacksons Creek will resume.

Thank you for your understanding.

Update: 9 November 2023

Our investigations have continued over the weekend to understand what caused the elevated readings of ammonia at our Sunbury Recycled Water Plant.

Over this time, and as a result of proactive and preventative actions we have taken, we are seeing an improvement in our testing and sampling results within the plant and Jacksons Creek.

Whilst these early results are encouraging, we will continue to actively monitor the situation, including testing, visual monitoring and working with our stakeholders.

We will continue to provide updates as more information is received.

Update: 3 November 2023

As part of our routine water quality sampling at the Sunbury Recycled Water Plant, a higher reading of ammonia was identified in the treated recycled water.

Investigations are currently underway to determine the cause which has resulted in the higher readings. We do not believe there is currently any threat to human health, but the readings have exceeded 0.9mg/L at the discharge point to the waterway.

We have immediately organised increased sampling of Jackson’s Creek and within our Plant to better understand the situation and we are doing everything to mitigate any risk.

We have notified the EPA, and are working closely with both Melbourne Water and Southern Rural Water as the waterway managers.

More information will be available as our investigations continue.