Puka Puka Stream results confirm grape marc leaching

Puka Puka Stream results confirm grape marc leaching

Grape byproduct has been identified as the main cause of pollution which turned a rural stream to a “black jelly” sludge. The Marlborough District Council has confirmed test results from the groundwater and surface water samples of Puka Puka Stream, 12 kilometres south of Blenheim, showed leachate from grape marc compost dumped nearby was the “most likely” cause of pollution.

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