Everyone knows about urine-indicator dye, despite the fact that it has 100 percent never existed
If you pee in the pool, it’ll go blue! There’s a special dye in there, designed to detect urine, and it’ll billow around you in a big, embarrassing, pissy cloud, and everyone will know you’ve done it, and you’ll be hounded out of town as a known pool-piddler.
Everybody knows that, right?
Except it isn’t true. It doesn’t even stand up to any scrutiny as an idea — what chemical specifically detects wee-wee? Would something that would react that dramatically to a dribble of micturition be safe to swim in? And if it happened, and someone was suddenly surrounded by a cerulean aura of widdly-woo, what would the protocol be for lifeguards, pool staff and fellow swimmers? If a pool had to be evacuated every time someone leaked in it, nobody would have ever completed a length. Plus, what would happen next — would they pour in an anti-piss substance that returned it to normal? Would they drain the pool and refill it with untainted water? (Answer: Highlyunlikely).
Despite being clearly nonsense, it still persists as an idea. “I’ve heard many people suggest that there’s a chemical that will react with urine to turn a certain color,†says environmental engineer Ernest R. “Chip†Blatchley III of Purdue University, who has spent a lot of his career studying the chemistry of swimming pools, and has become the media’s go-to figure when discussing people relieving themselves in the shallow end. “But as far as I can tell, it’s a myth. I’m not aware of any chemical that’s added to pools for this purpose.â€
“I think everyone who works in the pool trade has been asked about it,†agrees Sue Pace of H2O Swimming Pools Ltd. “But unfortunately, it’s a complete myth.â€
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