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(USEPA). Nevertheless, by applying the proposed methodology, sound comparable
assessments, based on risk assessment methodology, can be made regarding the
human health risk associated with the consumption of freshwater fish in South Africa.
People responsible for these assessments would also be able to compare their data
and information with other studies in the world, especially that of the United States
of America.
These surveys will also identify areas in the aquatic system where aquatic life
and especially fish have unacceptably high chemical contaminant levels due to
anthropogenic activities in the catchment. This information can be used in catchment
management programmes and thereby contribute to the general management of
the catchments. Thus, by following and implementing the proposed methodology a
major contribution would be made to the protection of the consumers of freshwater
fish as well as the freshwater aquatic environment. This would in turn contribute to
the ultimate goal of ensuring that the fish populations are fit for present and future
human consumption.
All the data and results that are generated are documented and organised in a way
that will facilitate their review and assessment. The risk assessment project leader
or designated person should design specific forms to ensure proper documentation.
The long-term goal must be to reduce the impacts on the water-body to such a level
that the contaminant levels in the fish pose no health risk to consumers (see Heath
et al., 2004a,b for more details).
The programme must be reviewed considering the objectives, activities and remedial
actions that have been taken by other programmes, especially those related to
catchment management and the River Health programmes of the Department of
Water Affairs and Forestry. This review will enable the risk manager to adapt the
programme as required thereby achieving the goals of reducing the health risk to
the consumers of freshwater fish and contributing to the effective management of
catchments.
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