I have a "blacklight" to check for dirt and noticed the water in the toilet bowl and a sinkful of water in the same bathroom had a distinct greenish color? I poured a lot of bleach into the toilet to clean in out and the water then looked colourless under the blacklight (with the bleach). After cleaning and flushing a couple of times, I was looking at that greenish water again under the blacklight.
This is actually serious because I am quite ill and one of the bacterial infections I have has some ability to fluoresce. I tried to get some information but it was way over my head and I don't know where else to turn at this point.
I suppose my question would be: what is the normal color of water when it is exposed to a blacklight? Should it change at all and if it does, is there something to be concerned with? Your help will be much appreciated.
You should take a sample of the water to a lab for analysis if you're really concerned. There are minerals that fluoresce under UV light, so it could be that and not bacteria. But I doubt that anyone other than a lab will be able to offer more than speculation on the matter.