said by SparkChaser:Yes, it is fun. People don't believe that ultra pure water is about 18Megs.cm resistance. That's a way to measure purity. It also fluoresces.
I used to run and maintain the DI water plant at SLAC. One of the things they told you was to not drink the water on a regular basis.
This DI water plant supplies the water that cools the INSIDE of the power conductors feeding the magnets and the klystrons. You had to make sure that you had your plumbing fittings connected to your conductors before you landed the terminations, and your differential pressure switch monitoring the water in your wires before energizing the load.