I continue to check my little dashboard of #SanFrancisco COVID numbers each morning to decide whether to go get professionally made coffee at …

I continue to check my little dashboard of #SanFrancisco COVID numbers each morning to decide whether to go get professionally made coffee at my local Peet's or make so-so coffee at home. As you may recall, I track three numbers: number of positive (i.e. sick) tests; % positive tests; and COVID detected in wastewater. A couple of weeks ago, the COVID-in-wastewater number zoomed up sharply. It was so sharp, I assumed it was just a momentary blip (wastewater numbers are noisy), but it stuck around. The last time I blogged about these numbers, it was because all three were at "pretty safe" levels. This time, I'm blogging to note that they're not all pretty-safe. I'll still go out for coffee,* though. The COVID-in-wastewater isn't super high, and the PCR test levels are still low.

graph charting three measurements over the past 60 days. two measurements have stayed low the whole time: number of positive PCR tests and % of positive PCR tests. The green line, COVID in wastewater has generally been higher (though below the 'pretty safe' line. A couple of weeks ago, it shot up to about 50% over the safe level. since then, though it's wobbled, it's stayed at about the same level

I dunno why the COVID-in-wastewater went up so much. I just saw an article about how recent improvements at the Southeast Treatment Plant helped it smell better, I thought maybe someone moved a sensor after they re-opened that part of the plant. But now that I double-check, I see that work happened a few months ago. So, uh, 🤷

*Joke's on me: The new Peet's corporate closed my local shop. I guess I'll make my own coffee at home after all.