If I could get a sample of the water, testing it for chemical composition would be no problem. I work in the Pool & Spa business. Testing it for biological agents/bacteria, etc. is another thing, tho. I'll have to ask at work today and I'll report back tonite.
BTW, I've had the same rash -- on my back -- after spending the nite in the Womb on the nite of the Meteor showers just recently...whenever that was.