A water lobby group doubts a tax on water would affect trade negotiations.
Labour made big promises before the election to tax exports of bottled water.
However, a leading trade negotiator has told MPs if they follow through with their promise, it would break trade agreements, including that with China and the revised TPP.
Water New Zealand CEO John Pfahlert told Rachel Smalley it seems unlikely this would be the most pressing issue for the Government, because there's a bit of give and take in trade deals. Listen to John Pfahlerts interview