Drain Tiles and Water Seepage

[Crystal C.]

I have an old Milwaukee house built in 1929. A such, the house was built with the old clay drain tiles and palmer valve system. There is seepage into the basement during seasonal downpours.  A drain tile test was done and showed a 50% blockage in two of the tested sites and 75% at the third. The tiles are blocked with clay mud. The basement contractor of course wants to install interior drain tiles and a sump pump to the tune of $9,000.

I'm trying to get a gauge of who may have addressed the issue by getting the drain tiles cleaned out? Is it reasonable to expect a cleaning to open up mud clay from tiles this old? If so, any suggestions on who to contact for cleaning?

There is also negative grading all around the house that needs to be addressed, and no doubt contributing to the problem.