Each day 870, 000 liters of sewage pass through before being discharged, 99% decontaminated, through a 25-centimeter-diameter pipe into the harbor where grade-schoolers learn to tack.

FORBES: Muckraker

Inside the riser pipe is a space about half a meter in diameter, large enough to hold the spinning drill pipe and bit and to allow the return flow of drilling fluid.

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In the video, officials were shown removing the pipe from a ceiling that apparently was just below the restroom and then, at the hospital, using pliers and saws to gently pull apart the pipe, which was about 10 centimeters (about 3 inches) in diameter.

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The pipe goes so deep, that the bottom lengths into the reservoir are just a few inches in diameter.

FORBES: Updated 11:30 Central.