This conduit run is from a dwelling to a detached structure on the same property with the dwelling at a lower grade. There is alot of ground water present on the lot. The conduit is picking up water every time it rains hard.
Unless you live in a desert, underground conduits will eventually fill with water due to condensation. The best solution IMO is the previously posted suggestion of bringing all penetrations into the house above grade level.
Few things are harder to put up with than the annoyance of a good example.
