Water temp was 30.2℃.

Here is a wastewater treatment plant of a factory I visit constantly. Air temp was 35℃, however we are not surprised such temp nowadays.

But the water temp was 30.2℃. Also this year, the water temp becomes above 30℃. According to a past record of this plant, the water temp was 35℃ on Aug. 13th 2016. I remember that I thought my thermometer has been crashed then.

So, we must be careful the heatstroke.