Ignoring that slavery touched the entirety of the continent, I'm going to guess that means your German ancestors ended up in the Midwest. Probably on Native American lands.
To this day, Native Americans are 20 times more likely to lack indoor plumbing than Whites. Roughly fifteen percent of the Oglala Lakota County, containing the Pine Ridge Indian Reservation, in South Dakota lack indoor plumbing. Meaning this year they likely had to piss in buckets as the outhouse was too dangerous.