Copper Chromium Arsenic (CCA) Treatment of Timber

Treated timber - Copper Chromium Arsenic (CCA) Treatment of Timber

Report from the Environmental Risk Management Authority

Date of publication: May 2003

Copper chromium arsenic (CCA) is one amongst a number of substances that are monitored by the staff of the Environmental Risk Management Authority (the Authority), in terms of regulatory action overseas and the case for any regulatory action in New Zealand.

New concerns about the use of Copper Chromium Arsenic (CCA) as a timber treatment were raised in a report by a US scientist, Dr Richard Maas, that the Authority became aware of in November 2002.

As soon as the Authority had knowledge of the Maas report a decision was taken to conduct an investigation into any public health issues arising from the use of CCA treated timber, looking not just at the Maas report but at other available information as well.

Document availability

These publications are not available in hard copy. They are only available on this website in PDF format below.

Report from the Environmental Risk Assessment Authority

(PDF, 29 kB)

CCA Questions and Answers

(PDF, 39 kB)

Report on CCA treated timber

(PDF, 244 kB)

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Related information

ERMA website