The reason everyone got very paranoid about a second wave is that wasterwater testing went through a huge spike 2 weeks ago, but it now appears to have gone pretty much back to where it was,,
ESR now have an interactive dashboard to look at wastewater results both nationally and in any region you want to drill down and look at
https://esr-cri.shinyapps.io/wastewater/#region=Wellington&log_or_linear=log&period=allTimeButton