The Regional Catchment Strategy for the Port Phillip & Western Port region
Pressures (Western Port)

Pressures on the marine water quality of Western Port

This page describes some of the main pressures on the marine water quality in Western Port.  They are barriers to achieving this strategy’s targets so planning and action will need to find ways to minimise their effects.

The condition assessment shows that Western Port’s water quality is generally good.  However, the nature of Western Port’s physical environment makes the quality of its marine waters particularly vulnerable to adjacent agriculture, residential, industrial and port development.

The main sources of pollutants from catchments, are freshwater inflows, coastal erosion and coastal infrastructure.   Climate change is a long-term and significant risk to Western Port’s marine waters.

Much of the information about pressures has been sourced from ‘Understanding the Western Port Environment: A summary of current knowledge and priorities for future research’, published by Melbourne Water in 2011.


The marine water in Western Port has been assessed (Method and Condition). Lead organisations are committed to achieving the targets (Targets) and arrangements are in place to monitor and report on progress and success.

Targets and leadership arrangements are determined in consultation with relevant departments, agencies and delegated land managers.