- May 21, 2001
I didn't quickly see a Wisconsin statewide wastewater website. But there is a link on your link to local sewershed values. https://www.dhs.wisconsin.gov/covid-19/wastewater.htm#wastewaterah yeah... sorry I honestly forgot about the waste water measuring
I don't think that gives you a solid integer of "X" number of new cases today. I'm sure if gives officials a better picture of the volume of cases, but I can't believe their deriving the chart here from waste water.
The image below is official counts for two different Milwaukee locations on the bottom and sewer data on the top. As you can see the official case count graph is not that different from the sewer results. Thus, the sewer results give you a pretty good indication of the actual case load. BA.5 has just started to hit Wisconsin, so I do expect a big spike in wastewater data in the next couple weeks there. Since many people are not reporting their at-home test results, we might not see the same spike in the official count graph. That is especially clear on the left image, the summer 2022 sewer spike is high but the official count was not nearly as high.
Edit: updated the images since I copied the wrong image at first.