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So a large build-up
of grit and sludge will need to be broken down
and removed so that sewage
can once again flow to the treatment plant
of grit and sludge will need to be broken down
and removed so that sewage
can once again flow to the treatment plant
Full Transcript
00:00:01.000 --> 00:00:03.034
So a large build-up
of grit and sludge
00:00:03.038 --> 00:00:05.048
will need to be broken down
and removed
00:00:05.518 --> 00:00:07.518
so that sewage
can once again flow
00:00:07.552 --> 00:00:09.312
to the treatment plant.
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Movie Summary
An up-close look at the heroes that keep America's sewer systems running.