Sewage treatment system impact monitoring

One of our goals is to protect the environment - so we aim to reduce the impact of our wastewater system on the environment.

Each wastewater treatment system has an environmental protection licence for the wastewater treatment plants. These are developed with the NSW Environment Protection Authority (EPA). The licence specifies the performance standards and tests we need to do.

We test for all licences under the Sewage Treatment System Impact Monitoring Program and report the results to NSW EPA every year.

Monitoring plan and reports

We have a monitoring plan that sets out how to check for environmental impacts from our wastewater system.

Our monitoring plan for the Sewage Treatment System Impact Monitoring Program has been developed with, and endorsed by, NSW EPA.

We produce an interpretive report at set intervals. It provides a more in-depth look at longer term performance trends of our wastewater system. 


Ocean Sediment Program

2016-17 Interpretive report

2013-14 Interpretive report


We produce data reports in between interpretive reports. They provide a check on environmental impacts.

To request past data reports, email