[Misleading Statistics] Public swimming pools may not be as disgusting as they sound

It is summer time again and many of us who can’t have a private pool are heading to public swimming pools or beaches. But honestly, had you ever released some yellow liquid into the pool when you are swimming? If you never did, then someone else did. According to recent studies by Environmental Science & Technology Letter, there are about 20 gallons of urine, or about 75.7 liters in an average public swimming pool.

milk_jugs_in_a_row1

Gallon sized of milk container

At this moment, you might imagine someone pouring 20 gallons of yellow urine into a clear, sparkling swimming pool. This sounds truly disgusting. However, when the size of the swimming pool is considered, that 20 gallons sound very insignificant. For a small size pool with the size of a 25 X 10 X 5 feet depth, it can contain 97,020 gallon of water at it. Even this small pool only has 90,000 gallon of water and someone poured 20 gallon of urine into it, it will only be about 0.022% of the total amount. At the same time, it is very likely to have more than 0.022% of animal urine in beaches and rivers.

Such small number doesn’t say the water in swimming pool is clean, as there are possibly sweat, dead skin, and hair from other swimmers too. In addition, some public pools purify their pools with chloride cleaning products. And these chlorides are more likely to cause red eye effect after swimming in public pools. A shower after swimming will definitely clean up the unclean water and the disgust feeling afterward.

Here are formula of calculating gallons of water in a swimming pool from PoolSpa.

Formula For Average Gallons In Rectangle, Square Or Free form Pools:

Length x Width x Average Depth x 7.5 = Total gallons

Formula For Average Gallons In Circular Pools:

Diameter x Diameter x Average Depth x 5.9 = Total gallons

Formula For Average Gallons In Oval Pools:

Length x Width x Average Depth x 5.9 = Total gallons

Formula For Average Depth Of Pools With Slopes:

Shallow End Depth + Deep End Depth Divided by 2 = Average Depth

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s