Website content change log

This change log documents significant changes to the Water Quality Guidelines website that may be of interest to users. This log can be used as a record of key changes to guideline content, including updates to default guideline values.

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Change log 2019

Reference no.	Date of change	Page title and address	Description of change
2019-10	27/11/2019	Accounting for local conditions	This page has been updated to clarify the reasoning behind the recommended application of a higher level of species protection default guideline value (DGV) for a bioaccumulating compound. It provides more details on the circumstances under which the above recommendation can be relaxed, updates descriptions of the processes of bioaccumulation and highlights the key the Water Quality Guidelines principle of continual improvement.
2019-09	24/09/2019	IMCRA mesoscale bioregions of Australia	This page has been updated to improve the clarity of the existing guidance on where the phys-chem stressor regional DGVs can be found, and the need to first check whether local jurisdictions have derived GVs for phys-chem stressors, as these will override the regional DGVs.
2019-08	24/09/2019	Australia’s marine regions	This page has been updated to improve the clarity of the existing guidance on where the phys-chem stressor regional DGVs can be found, and the need to first check whether local jurisdictions have derived GVs for phys-chem stressors, as these will override the regional DGVs.
2019-07	24/09/2019	Australia’s inland waters	This page has been updated to improve the clarity of the existing guidance on where the phys-chem stressor regional DGVs can be found, and the need to first check whether local jurisdictions have derived GVs for phys-chem stressors, as these will override the regional DGVs.
2019-06	24/09/2019	Your location	This page has been updated to improve the clarity of the existing guidance on where the phys-chem stressor regional DGVs can be found, and the need to first check whether local jurisdictions have derived GVs for phys-chem stressors, as these will override the regional DGVs.
2019-05	11/09/2019	Toxicant default guideline values for sediment quality	This page has been updated to improve the clarity of the existing guidance. This update DID NOT include any changes to the sediment quality default guideline values.
2019-04	10/09/2019	Manganese in freshwater and marine water	Reported freshwater moderate reliability trigger value (i.e. default guideline value in the ANZ Guidelines (2018), updated to 1900 µg/L. The previously reported value, 1700 µg/L, was identified as an error in the 2000 Guidelines.
2019-03	23/07/2019	Toxicant default guideline values for protecting aquatic ecosystems	Access to DGV master table temporarily removed while it is updated to reflect changes made to DGV database.
2019-02	07/2019	Search for toxicant default guideline values	The database underpinning the search tool for toxicant default guideline values (DGVs) has been reviewed and updated to correct errors and inconsistencies. Refer to the ‘explanatory note’ for information on the contents of the database, including what guideline trigger values have and have not been incorporated from the 2000 Guidelines.
2019-01	27/06/2019	Nitrate in freshwater and marine water	The ANZECC/ARMCANZ (2000) guideline trigger value for nitrate was erroneous and as such, the corresponding content from these 2000 Guidelines has been removed.