Something green lurking in the sewers
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Something green lurking in the sewers
Something green lurking in the sewers. (Branden Klayko / Broken Sidewalk)

Spotted this sewer Downtown today that was filled with a very bright green liquid. A better (but slightly more disgusting) view of the green liquid in the sewer is below. These colors haven’t been altered. It appears to be some sort of chemical, but it looks like there’s a lot of it. Given that Downtown sewers drain to the Ohio River, this can’t be good for the environment. [UPDATE: Officials with MSD contacted us to say the color is a harmless chemical used to track leaks in the sewer system.]

Something green lurking in the sewers
Something green lurking in the sewers. (Branden Klayko / Broken Sidewalk)
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Branden Klayko

5 COMMENTS

  1. You’re right, Bill. Someone from MSD replied to my e.mail today and explained the dye. It’s bright, but harmless. I hadn’t seen such a dye before in the sewers and it looked a little bit like the green antifreeze they sell nowadays. Still keep a look out for turtle vs rat karate, though. The drain is located on Washington Street at the foot of Seventh Street by the floodwall, but after today’s rain, I’m not sure if it’s still there.

  2. These dyes are used to track the flow of sewers, rivers, groundwater, and runoff. They are not polluting except for the color and that fades in hours to days – some of them are tested and approved for drinking water. Here’s one manufacturer’s page http://www.brightdyes.com/

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