Testing of grapes near the Woodbourne airbase has cleared them of any firefighting foam chemical contamination.
Vineyard worker picking grapes (file photo). Photo: 123RF
Grape growers asked the Defence Force to run the tests after meeting resistance from buyers.
The Ministry of Defence said the tests had found no trace of the two chemicals, PFOS and PFOA.
The Ministry for Primary Industries said it was confident there was no food safety risk for grapes or wine from firefighting foam.
Investigations into toxic firefighting foam contamination have spread to a new 1600-home development in northwest Auckland, and to Devonport and Whenuapai.
New Zealand officials are wrong to underplay the risks from firefighting foam that has contaminated water supplies, an American public health expert says.
The government was not wrong to withhold information about potential toxic foam in the water supply, the Ministry for the Environment's chief executive says. Audio
An Australian firefighter with alarming levels of toxic foam chemicals in his blood says New Zealanders must take protecting their health into their own hands. Video
The Defence Force could face prosecution over contamination from toxic chemicals used in firefighting foam.
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