The Jan. 3 PBS News Hour featured science correspondent Miles O'Brien plunging into a muck of that which rhymes with "it" to investigate our ailing country's sewage system.
Here's a written account of his story of what happened underground [1].
The webpage included a couple of videos:
Links:
[1] http://www.pbs.org/newshour/updates/science/jan-june13/sewer_01-03.html
[2] http://www.rcap.org/taxonomy/term/1006
[3] http://www.rcap.org/taxonomy/term/1007
[4] http://www.rcap.org/taxonomy/term/289
[5] http://www.rcap.org/taxonomy/term/1008
[6] http://www.rcap.org/taxonomy/term/17
[7] http://www.rcap.org/taxonomy/term/72
[8] http://www.rcap.org/taxonomy/term/132