Submitted by "NJwirenut":
Here's a picture of a nice section of what was once 3/4" EMT running around the side of an indoor swimming pool. This was still live, carrying power to some non-GFCI receptacles fed from a Federal Pacific "no-trip" subpanel. Looks like a crack developed in the pool wall, leaking water onto the conduit for years.
Bob Weiss (NJwirenut)