Hon Dr MEGAN WOODS (Minister of Research, Science and Innovation): I'm advised that testing is undertaken precisely where the waste water from the Southern Interceptor meets the Māngere treatment plant. Testing commenced at the Southern Interceptor on 12 July, and the first positive result was confirmed on 16 July. As I mentioned in my answer yesterday, it is expected that we see positive results in the Southern Interceptor as this is where the waste water from the Jet Park Hotel flows through. I would caution the member about reading too much into these results at this early stage of the project. This is scientific method development and not yet a verified public health surveillance tool. The research obviously does not provide granular information about the precise location of COVID-19, and to read too much into these interim findings could ultimately undermine the public health response. I'm happy to offer the member a briefing on the use of waste-water testing or, indeed, when alert levels allow, a visit to the Southern Interceptor, should he be interested in how the process works.