RACHEL BROOKING: No, most of Dunedin's water supply is from the Lammerlaws—beautiful tussock grasslands—I think it's Chionochloa rigida. And then that water from the tussocks, that's piped into reservoirs, it's treated, and then it's piped into people's houses. Of course, that's quite a complicated process in itself. It's governed by a lot of different things. There's the Local Government Act, that councils have an obligation to maintain water services; that's section 130. And of course, when they're reporting in their long-term plans, water services are a group of activity that must be reported on. Of course, councils have to get resource consents to take that water in the first place. And then, very importantly, and relevant to all of this, they also have to comply with water standards.