On Fri, 25 May 2007 22:19:49 -0400, mm wrote:

In a townhouse n'hood near mine, many of the houses have a pipe coming
out of the wall, and I wonder what it is.

It's a white plastic 4" right angle pipe connector that comes out
about 4 inches** and then turns to point down. Nothing is connected at
that point. It's at the same level as the garden faucet so I guess it
comes out of the ceiling of the basement.


Back up sump pump.