Today In Parliament Tuesday 23 August 2016 - evening edition

Week in the House begins with a round of speeches praising the performance of New Zealand's athletes at the Olympic Games in Rio. Questions for the prime minister, John Key, begin with a series from Greens co-leader, Mitiria Turei, about the quality of drinking water. New Zealand First leader, Winston Peters, has the last laugh in a tit-for-tat exchange with the prime minister.