Protecting and managing water quality

We help protect the health of our waterways by supporting water quality managers to improve water quality.

The tools, resources and information we provide for water quality managers include water quality and river flow objectives, monitoring programs and support for local councils and decision-makers to manage water quality.

NSW Water Quality and River Flow Objectives

We have developed the NSW Water Quality and River Flow Objectives for all catchments across New South Wales. They were developed in consultation with local communities and recognise the environmental values and uses people want protected and represent ideal natural flow conditions for healthy rivers.

The NSW Water Quality Objectives include indicators of water quality that support a specific value or use. The NSW River Flow Objectives set out goals for surface water flow management and identify how river flow can protect river health and water quality.

A similar set of objectives are available for marine waters and are known as the Marine Water Quality Objectives.


Hawkesbury Nepean estuary downstream of Wisemans Ferry

We work with councils and other agencies to manage the health of our waterways.

The Risk-based Framework for Considering Waterway Health Outcomes in Strategic Land-use Planning Decisions is a tool that decision-makers can use to manage the impacts of land-use activities on water quality. The framework combines existing principles and guidelines recommended in the National Water Quality Management Strategy and focuses on delivering waterway health outcomes for local communities.

Our work to protect and support healthy waterways in New South Wales also involves supporting local councils and decision-makers in monitoring, evaluating and reporting on water quality. Local councils can support healthy waterways through:

  • strategic planning
  • development consent
  • environmental regulation
  • stormwater and sewage management
  • awareness raising within the community about activities that affect water quality.
Mulloway on Pimpernel Rock NSW

We help manage the New South Wales marine estate under the NSW Marine Estate Management Strategy 2018–28.

The Marine Estate Management Authority leads this coordinated approach to protect and better manage our coasts and oceans.

Improving water quality and reducing marine litter is one of the key themes of the Marine Estate Management Strategy.

Our work in the marine environment includes:

Water quality management

The NSW Government adopted the National Water Quality Management Strategy (NWQMS) as its policy to manage the quality of waterways in New South Wales and protect water resources. It includes guidelines to support state and local governments, water authorities and industry to maintain and improve water quality according to local community environmental values and uses. These values and uses are what the community believes are important for a healthy ecosystem, for public benefit, welfare, safety or health.

The Australian and New Zealand Guidelines for Fresh and Marine Water Quality (the Guidelines) is the central technical reference document for the NWQMS. The Guidelines provide a framework, recommendations and scientific criteria to help planners, regulators and researchers manage and improve water quality and waterway health.

The Guidelines were updated in 2018 to incorporate new science and knowledge developed since they were last revised in 2000, and will be updated periodically.