How to measure HOW MUCH PEE IS IN YOUR POOL

Now that summer is winding down and you’ve already spent lots of time in the water, I want to show you now how to figure out how much pee is in any pool. There’s actually a lot of misinformation on the topic of pee and pools, so I’m gonna do some experiments on my own along with some clever science people in foreign lands and spoiler alert: some of the results are good news and some aren’t, so let’s jump right in. So this first experiment is to determine how much pee is in an actual sample of pool water using an ingenious method. So I got two samples from my friend’s community pool, where lots of people swim. One from the pool and one from the Spa, and Then two samples from a friend’s backyard, again one from the pool and one from the Spa. I also collected samples from the source water at each location as a control and I’ll explain why in a minute. Now that I have my samples I needed to quickly get to my scientist friend Lindsay in Canada, but lucky for me– –I knew a shortcut. We are now in the lab of the University of Alberta, and this is Lindsay Blackstock and she is basically a genius. So you are going to help me determine how much pee is in these samples, because we know people pee in the pool. Yes, we have strong evidence that people do pee in the pool So we’re going to try to find a way that we can measure that pee without actually measuring pee. I’m going to apply my new strategy based on the amount of artificial sweetener that’s in the pool. We know artificial sweeteners don’t come from anywhere except for urine, so that’s the only logical source for them if we find them in the pool, and we know how much artificial sweetener is in the average person’s pee and then using that we can estimate how much pee is in the pool, so we’re going to take this sample, we’re going to bring it over to our sample prep bench, we’re going to filter it, transfer it into some special vials Into this instrument, which is a liquid chromatography system, so this instrument is going to concentrate our sample before it passes it on over to the second instrument, which is a mass spectrometer and the mass spectrometer is able to detect the individual little artificial sweetener molecules one by one. Love it, let’s get to work! Bring it on over there. Before we run the samples let me explain why I find Lindsay the scientist’s solutions, so brilliant. You can actually take a sample of pool water and directly measure the amount of urea in there, but the problem with that is humans also excrete urea through things like sweat, which is also very common in a pool, so you can’t tell how much of that urea actually came from pee. To get around that she looked at the amount of a certain artificial sweetener in the sample called Acesulfame Potassium, Which is really common in food products such as these–oh, and also all of these. So pretty much everything. The reason drinks like these are zero calories is because you taste the Acesulfame Potassium sweetener, but the chemical compounds aren’t broken down at all by your body so more than 99 percent is passed through in your pee, within 24 hours. And therefore the only reason this would be in the pool is if it passed through a person first. And just to be sure you measure the source water at both locations because sometimes trace amounts of the sweetener can be found in the water supply if so we just subtract that from the results.

45 thoughts on “How to measure HOW MUCH PEE IS IN YOUR POOL”

1. RSA Ninja says:

Im not swimming again

2. Barhoum2006 says:

Me: ahhh nice fresh amazing nostalgic smell of a pool

Mark rober: ahh nice smell of dissolved pee in h2o composed in chlorine and 100 gallons of pee in this pool

3. Boris G says:

And that’s why I don’t swim in pools that aren’t mine

4. Theodor Bjerke says:

Thanks.. now I’m gonna think about this every time I accidentally swallow water in a pool 🏊…

5. Theodor Bjerke says:

Am I THE ONLY one that doesn’t pee in the freaking pool???

6. Wildfire says:

What kind of dirty trash pisses in a pool anyway

7. Dr Eyezic says:

6:00 i'm never going swimming again.

8. S V says:

So when Mark jumped into his friend's pool, he literally covered himself in his friend's urine.

9. B842 says:

when you brag to your friends that you can see underwater without goggles

10. Charlotte Wang says:

that poor kid at the end swimming without goggles…

11. Wassup G says:

So this is why I have asthma…

12. NegatingSilence says:

Yeah but if the only unique ingredient in the pee is artificial sweetener, that implies there's really no reason to be worried about pee in the pool.

13. Martín says:

4:08 look at the shadow in the pool

14. Avery Kucan says:

the reason why you even smell it is because the p becomes a gas when it undergoes a chemical reaction which means that the pee is leaving the water.

15. Cyrus Chan says:

I just came back from a water park today….

16. Loyal Monahan says:

What if you got a new pool and how the pee get in there

17. Trent Tetley says:

Oh God plz no

18. 祖宗 says:

7:08 haha 69 nanograms

19. Hoyt 12 says:

I live in Alberta Canada it’s cold right now

20. Haloa Akana says:

Mark be like: wtf??? 1:38 – 1:41

21. Johnny Kiser says:

Nobody

Absolutely nobody

Me: *wondering what are they using to represent the pee?!

22. Green Eyed Bali Bule says:

What about waterparks, like waterslides or wave pools???

23. Green Eyed Bali Bule says:

What about waterparks, like waterslides or wave pools???

24. Green Eyed Bali Bule says:

What about waterparks, like waterslides or wave pools???

25. Sonya Mincheva says:

Wait so your telling me that he was in Alberta in 2017 and I missed him

😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭

26. CellyWelly says:

Bruh she deadass uses a windows XP

27. asdsdjf asdjxajiosdqw says:

This is the reason I never go in a public pool.

28. Mason and Anthony says:

If you were to measure pee in the ocean you would probably find more then a googolplex gallons xD

29. Mr. Timestamper says:

Nobody:
My brain while I am trying to sleep:
So all those times you've swallowed water in pools, you were actually drinking pee

30. groovy rock says:

WHO KEEPS PEEING IN THE POOLS

31. unkown says:

O thats why i got asma i acedently drank pool water

32. Devinediva111 says:

Oh god 😳 I love to swim 😫😫😫

33. Marlamin Chorster says:

"Welcome to my ool, notice there is no p in it. Lets keep it that way."

34. Carlos Lovell says:

bruh, we have starbucks in Canada as well

35. Panda a says:

What.

36. Jackie G says:

Umm ive never peed in a pool. Is peeing in there normal ????

37. Law's NE0N X - D | G4MING & LETS PL4Y says:

I mean— we have tongues for a reason.

38. Law's NE0N X - D | G4MING & LETS PL4Y says:

39. Chim XMochi says:

HOW DID HE GET THE PEE

40. Draco Uzumaki says:

Do animals (mainly birds) sneak and pee into pools?

41. Ethan K says:

He did explain the test results from the control ?!!

Never swimming again lol

43. Justin Taylor says:

I’m regretting clicking on this video right about now 😣

44. Betty Smith says:

Does the pee every breakdown to anything harmless?

45. foop says:

1st step: get a pool