Marae Investigates story - "Water runs through our veins" - we talk to whanau/hapu, iwi and waka representatives at the source of the water debate. We talk to Willy Emery Waitangi No.3 trustee about his hot pools; Te Rangikaheke Bidois chair of Te Maru o Ngati Rangiwewehi about their Taniwha springs drinking water and Toby Curtis chair of Te Arawa Lakes Trust about their 13 lakes.