We think about how co-governance could help fix Rotorua's water quality problem, the quality of the lakes. Well, actually, a few years ago, it was decided that the waste water from Rotorua township should be pumped up and sprayed into the forests and hills around Rotorua because that addressed some of the legitimate concerns that mana whenua had with discharging waste water into the lakes and into the river. It seemed like a good thing to do. But what we know now is that that contaminated groundwater is now moving into the lake, even though it was discharged to ground and should have been taken up by the trees. It's quite clear that solutions to waste water and environmental and other problems require good science and good data rather than co-governance to solve.