EVISA Print | Glossary on | Contact EVISA | Sitemap | Home   
 Advanced search
The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).


Supporters of EVISA includes:

The Australian Water Quality Guidelines for Fresh and Marine Waters



History
The Australian Water Quality Guidelines for Fresh and Marine Waters (ANZECC  1992) was one of a suite of 21 documents forming the NWQMS and was released in 1992 as one of the first guideline documents. In 1993 the ANZECC Standing  Committee on Environmental Protection (SCEP) agreed to review the water quality guidelines to incorporate current scientific, international and national information in a clear and understandable document.  

Target values
The guidelines do provied trigger values that have been mostly derived primarily according to risk assessment principles, using data from laboratory tests in clean water. These values are meant to represent the best current estimates of the concentrations of chemicals that should have no significant adverse effects on the aquatic ecosystem.
 
Speciation
The issue of the chemical form of physical and chemical indicators (that is, the  compound(s) of the indicator present in the sample) is considered to be relevant regardless of the use envisaged for the water. Speciation (the form of the chemical) assumes critical importance where the environmental value concerns ecosystem protection or human health. The guidelines specify that the form of the indicators needs to be determined and those chemical species that are likely to affect the environmental value must be identified. However, the guidelines state that the approach used in the past, were total (i.e. unfiltered) concentrations were measured and compared with guideline values, probably overestimates the amount of deleterious form(s) of the indicator and therefore may be considered to be overconservative. As a refinement the guidelines recommend to measure and compare total filtered concentrations, which also is considered to be a conservative approach (though less so) because the diversity of chemical forms of a physical and chemical indicator in the  solution may have different effects on an environmental value.


Related Information

EVISA Link Database: Australian and New Zealand Guidelines for Fresh and Marine Water Quality, Volume 1, The Guidelines (Chapters 1-7)

EVISA Link Database: Australian and New Zealand Guidelines for Fresh and Marine Water Quality, Volume 2, Aquatic Ecosystems - Rationale and Background Information

EVISA Link Database: Australian and New Zealand Guidelines for Fresh and Marine Water Quality, Volume 3, Primary Industries - Rationale and Background Information

EVISA Link database: Australian Guidelines for Water Quality Monitoring and Reporting (2000), Chapters 1-7


 Related News
 
 









Imprint     Disclaimer

© 2003 - 2010 by European Virtual Institute for Speciation Analysis ( EVISA )