In contrast to the river flowing out of the lake in crystal clear condition, downstream, because of the pulp and paper mill in Kawerau, it becomes the black drain. In 2010, when the Parliamentary Commissioner for the Environment reported on some of New Zealand's filthiest rivers, the Tarawera was the second filthiest. So this black drain has had thousands of tonnes of pulp and paper discharged into it over decades, and it was because of the legislation the Crown passed in 1954, the Tasman Pulp and Paper Company Enabling Act, which had minimal concern for the environmental impacts of those discharges, the impacts on the mauri of the river, and Ngāti Rangitihi. I acknowledge the work of Catherine Delahunty, former Green MP, working alongside Ngāti Rangitihi to try and get the loophole in the Resource Management Act closed and to clean up the river and stop those discharges.