A surprise to no one: Public pools really are filled with pee

Ever wanted to know how much people pee in the pool? If so, you're about to find out.

"The way I see it, the pool is the biggest, most expensive toilet — and it's all mine," Olympic swimmer Ryan Lochte told Funny or Die.

A team of researchers spent three weeks testing how much urine was in over two dozen pools and hot tubs in Canada.

They looked at the concentration of a certain artificial sweetener found in a lot of processed foods and passes through the body unaltered. And their findings are pretty gross.

Related: World's fanciest swimming pools:

17 PHOTOS
Unfathomable Swimming Pools
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Unfathomable Swimming Pools

Nothing like a week-long scorcher to make home buyers appreciate the value of a good swimming pool. But wade into the luxury real estate market and you'll find swimming pools with bigger price tags than most houses. For a glimpse at how the other half swims, our friends at Move.com compiled a list of some of the most over-the-top pools in America. Click through to see the most outrageous pools around.

Price: $7,800,000


For $7,800,000 you can secure the right to take daily plunges in this mini-pond. Its surrounding trees and rock might lead you to forget something: this is a private residence, not a resort.  


See the listing for the home here

Price: $7,800,000


For refuge from the sun, take shelter here and bob with some lily pads. 


See the listing here

Price: $22.5 M (or $75M for the entire estate)


Fans of HBO's southern-fried vampire drama, "True Blood," might recognize this Romanesque "natatorium" as the Vampire Queen of Louisiana's throne room. In reality, this palatial estate is located in the tony environs of Malibu, Calif. No bloodsuckers that far West -- unless you count the Hollywood types.


See the full listing here.

Price: $1,099,000


Swim around the lagoon of this $1,099,000 residence under the glow of seven-foot gas torches.  


See the listing here

Price: $1,099,000


Splash as much as you like: the pool’s terraced edges usher water down into an encircling moat.  


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What does new money smell like? If you live in this upscale Chelsea apartment, it has a hint of chlorine. Most New Yorkers would be thankful for an eat-in kitchen, let alone a 30,000-gallon indoor pool in their living room. Read our past coverage of the home here.

Price: $23M


When your Mediterranean-style mansion overlooks some of the most breathtaking coastline in the world, why would you ever settle for the pool? Well, if you live in this mega-mansion, the answer isn't quite so cut and dry.


See the listing here.

How's this for perspective? We could make some existential statement about the insignificance of human avarice, but considering that this property practically wraps around the island, we think we'll just bite our tongues.

See the listing here.

Price: $11,995,000


Resting just across the street from the Pacific, this Kihei, Hawaii residence’s pool creates the illusion that the ocean really begins just off its patio steps. It's the kind of illusion that a nearly $12 million price tag brings you. 


See the listing here

Price: $11,995,000


So what's it going to be? Real beach or fake beach? 


See the listing here

Price: $4,250,000


Savor the dip to come through the floor-to-ceiling glass windows of this $4,250,000 home in Los Angeles. 


See the listing here.

Price: $4,250,000


Then step outside and cool off with a – what should we say – waterfall-pool shower?


See the listing here

Price: $4,995,000


In Austin, Texas, this $4,995,000 home features an infinity edge with the first level sloping down into a second moat area located just a stones-throw from a lake.   


See the listing here

Price: $13,995,000


Booze it up at the pool bar while you suck in the mountain panoramas of this residence located in Pacific Palisades, CA. 


See the listing here

Price: $13,995,000


If you’re ever able to keep yourself dry, try some tennis: the $13,995,000 home enjoys access to private tennis courts. 


See the listing here

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In one public pool, it was estimated swimmers had left almost 20 gallons of pee. Another pool, about half the size of the first, was calculated to have about 8 gallons.

SEE MORE: Dirty Money: The Cash In Your Pocket Probably Has Poop On It

If you're shocked by that, we've got some more news for you. The team also tested a handful of hot tubs and found concentrations of the sweetener even higher in those.

One hotel Jacuzzi had a concentration three times higher than the worst swimming pool.

You might be wondering why a team of scientists spent weeks studying what most people already suspected. It was all in the name of hygiene.

The researchers want to raise awareness about the risks of peeing in the pool. Although urine is sterile, it can cause eye, skin and respiratory problems when mixed with pool chemicals.

A researcher said, "We should all be considerate of others and make sure to exit the pool to use the restroom when nature calls."

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