Flood Sediment not hazardous but caution is advised

Testing of sediment and silt deposited in and around Wairoa by Cyclone Gabrielle has revealed most flood sediment is not hazardous although some may be infectious. Residents are still urged to use good hygiene practices when dealing with silt as there is a risk of potential for pathogen infection.

Wairoa District Council arranged the testing to address questions about contamination risks of what was in the silt and implications for its handling and disposal.
All samples collected were found to be safe except for two samples which indicated the potential for pathogen infection. The concern for pathogen risks and infections after flooding is typical and expected, and has been part of Council’s guidance issued during the clean-up phase.
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Council advises that fresh silt is not safe for incorporating into vegetable gardens immediately, with the need to wait until a period that allows pathogen levels to decrease. However, it can be stockpiled for a few months, and in spring it could be incorporated into vegetable gardens for summer harvest crops.