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It is baffling how major metro areas like Lost Angeles has millions of poopers but there is almost no evidence of poop treatment facilities. Flying into/out of LAX and Burbank I look for those large squat open cylinders aerating wastewater but I never see them.
I imagine a 20 mile stretch of a 10 foot diameter underwater pipe sending all that treated poop water into the Pacific - but wouldnt that area be populated by tons of bacteria? Modern marvels of engineering!