Aldi Australia has confirmed a kitchen tap alleged to have up to 15 times the maximum allowable level of lead is safe for use.

The German discount chain conducted additional testing on the Easy Home spiral spring mixer after independent testing commissioned by the Queensland Building and Construction Commission found water from the tap contained excessive levels of lead, earlier this month.

"Our teams have worked tirelessly with authorities and independent testing laboratories to confirm that the tests conducted prior to sale were accurate, and the product is safe," said Aldi Australia chief executive Tom Daunt.

"I was alarmed by the claims suggesting that the spiral spring mixer tap ... may contaminate drinking water."