Why Are 96,000,000 Black Balls on This Reservoir?

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  • Published on:  Friday, May 10, 2019
  • I took a boat through 96 million black plastic balls on the Los Angeles reservoir to find out why they're there. The first time I heard about shade balls the claim was they reduce evaporation. But it turns out this isn't the reason they were introduced.

    Huge thanks to LADWP for arranging this special tour for me. Next time let's put the GoPro on the submersible!

    The balls are made of high density polyethylene (HDPE) which is less dense than water so they float on the surface of the reservoir even if they break apart. They are 10cm (4 inches) in diameter and contain about 210ml of water. So the main reason they are on the reservoir is to block sunlight from entering the water and triggering a chemical reaction that turns harmless bromide into carcinogenic bromate. This effect occurs with prolonged exposure to bromate so regulators insist that levels be kept below 10 microgram per liter on average over a 12 month period.

    Special thanks to Patreon supporters:
    Donal Botkin, Michael Krugman, Ron Neal, Stan Presolski, Terrance Shepherd, Penward Rhyme and everyone who provided feedback on an early draft of this video.

    Thanks to:
    Las Virgenes Reservoir for footage of initial shade ball dump
    Euro-Matic for bird into jet-engine footage

    Researched and Produced by Casey Rentz

    Animations by Maria Raykova

    Music from http://epidemicsound.com "Colorful Animation 4" "Seaweed"

    And from Kevin MacLeod "Marty Gots a Plan"

    This is an educational video about the science of water quality.
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Comment

  • Greystorm1619
    Greystorm1619  4 minutes ago

    That’s actually really cool though, this video was so fascinating I actually watched it all the way through

  • A Christian Report
    A Christian Report  an hour ago

    Some smart people to come up with that. Just not cool with the boat in my drinking water🤔

  • bbfreetube
    bbfreetube  2 hours ago

    As an environmentalist, I cannot condone this.

  • Kuality
    Kuality  2 hours ago

    pewdiepie has more subs than the amount of balls in that entire reservoir

  • James Baron
    James Baron  3 hours ago

    Man this video really blew up.

    Like my comment

  • Shazam Shazam7384
    Shazam Shazam7384  4 hours ago

    in the video 5:50 u Should see a Bird

  • Shazam Shazam7384
    Shazam Shazam7384  4 hours ago

    Did nobody saw how Did the Bird Die in the video

  • XX ZEUS XX
    XX ZEUS XX  4 hours ago

    5:52 anyone saw the bird going in the plane

  • SALAM JIHAD
    SALAM JIHAD  5 hours ago

    WTF ??? I JUST SEEN BLACK BALLS AND CLICKED IT !! NEVER MIND !! IM OUTA HERE !!

  • BITTER_ MEDicine
    BITTER_ MEDicine  5 hours ago +1

    Y don't you just fill the whole ocean with black balls then.

  • cooper hagen
    cooper hagen  6 hours ago

    Balls

  • Marshall Clement
    Marshall Clement  7 hours ago +1

    THE VSCO GIRLS ARE MAD

  • Robert Brackney
    Robert Brackney  9 hours ago

    California prison system has a lot of black balls in custody

  • Robin P
    Robin P  9 hours ago

    Brilliant - Don't you love the water industry??

  • Crowman
    Crowman  9 hours ago

    The plastic balls probably melt in the sun contaminating the water

  • SOTO
    SOTO  11 hours ago +1

    I thought it was caviar

  • Juan Gomez
    Juan Gomez  11 hours ago

    Never heard of this channel here on Youtube, but man, I am blown at how much I have learned by watching just 3 of your videos, I think my intelligence increased by 3, it was 6 out of 10 >.<

  • PDX Sissy
    PDX Sissy  12 hours ago

    all the birds are gone? what? there's still water visible!!


    PROPAGANDA!!!

  • PDX Sissy
    PDX Sissy  12 hours ago

    Why don't you do a report on the MILLION IPADS that the Gov't Teacher's Union bought!!???


    You DO REALIZE, the Teacher's Union owns STOCK in APPLE!!!




    CONFLICT OF INTEREST!!!!

  • PDX Sissy
    PDX Sissy  12 hours ago

    California is a Trust-Funder's Wet Dream!


    Gov't Union Retirement System, is a BIG INVESTOR in those balls...that Dr who found those balls...made MILLIONS on this!!


    The Gov't Union BELIEVES the citizenry are all on board, for ways to increase the gov't union retirement system :\