The uncontrolled release of wood preserving chemicals into the environment, in most African countries, is discussed. Kenya has some 25 wood preservation plants, 23 of which use formulations of Copper- Chrome-Arsenate (CCA). The bulk of treated timbers consists of poles and posts used in ground contact. Poor fixation of CCA elements are associated with the species used, Eucalyptus saligna and Acacia meeansii, both of which also have heartwoods resistant to penetration. Service lives are consequently short (5 to 15 years). Constant replacements result in increased amounts of toxic chemicals leached into soils and ground water. Treated timbers removed from service are not safely disposed of. Practices at most plants pose further problems of health and safety and environmental contamination. The lack of information, legislation and awareness has created a situation which calls for immediate scrutiny and rectification.

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