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Stormwater

Contaminants in Auckland stormwater

Stormwater quality monitoring has identified many of the chemical contaminants washing from urban catchments.

  • Contaminants include metals, particularly zinc, copper and lead, and organic compounds including polycyclic aromatic hydrocarbons, herbicides, pesticides, fungicides, plasticisers, hydrocarbons in oil and grease, etc.
  • There is a general assumption that the major sources of these contaminants, particularly the metals, are known although the actual proportions contributed by each source to total catchment stormwater loads are uncertain.

Stormwater grate

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There are three studies that help us to quantify the sources of zinc, copper and lead in Auckland stormwater. Download the report ‘ARC sources and loads of metals in urban stormwater'.

The following document/s are available in pdf format, for which you will need Adobe Acrobat Reader. Visit the Adobe website for further information.

Sources and loads of metals in urban stormwater:

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