14/10/2026
🚰 Day 4 of 7: What about mixer taps?
One spout doesn’t always mean one temperature to check.
A mixer tap can bring hot and cold water together before it leaves the spout. That reading tells you the temperature of the water coming out at that setting; it may not tell you the temperatures of the separate supplies feeding it.
First, identify the fitting: is a thermostatic mixing valve (TMV) fitted? Then check your practice’s monitoring plan for the correct measurement points and method. At a sentinel TMV, the hot and cold inlets may be checked using surface probes.
Save this for the next time your team reviews its water temperature checks. Tomorrow, we’ll look more closely at surface probes. 🌡️