What are Water Quality Objectives?
Quality Objectives are specific ‘targets’ that protect the agreed Protected
Environmental Values for inland, estuarine, coastal and marine waters and also
The overarching principles and objectives for water
quality management in Tasmania are provided in the State Policy on
Water Quality Management 1997. It provides the management
framework for the protection of water quality in Tasmania and the development
of Protected Environmental Values, ambient Water Quality Guidelines and Water Quality
Water Quality Objectives are the most conservative of the Water Quality
Guidelines which allow for the Protected Environmental Values to be maintained
Who sets Water Quality Objectives?
Under the State Policy on Water Quality Management 1997, the EPA Board sets the Water Quality Objectives.
What is the process?
The State Policy on Water Quality Management 1997 (the Policy) sets out how Water Quality Objectives should be set and follows the methodology described under the National Water Quality Management Strategy (1992).
process involves establishing Water Quality Guidelines which are numerical
values or descriptions of water quality indicators which allow a particular
Protected Environmental Value to be maintained and protected. Water Quality
Guidelines can be set using national values, regional values or on the basis of
determined the Water Quality Guidelines appropriate for the agreed Protected
Environmental Values, the Water Quality Objective is derived from the most
conservative of the appropriate guideline values.
identified Protected Environmental Value for which suitable water guideline values are
not available within Tasmania is that for the Protection of Aquatic ecosystems.
WQGs for Aquatic Ecosystems
The development of guideline values for aquatic ecosystems has been undertaken in accordance with the National Water Quality Management Strategy (NWQMS).
Water Quality Guidelines for Aquatic Ecosystems have been derived for the following waters:
- Inland surface waters
- Estuarine waters
- Coastal and Marine Waters
- Groundwater (under development)