Walter Byrd remembers the first time sewage came bubbling out of his toilet like it was yesterday.“It was just pumping up through there,” Byrd says. “One of the bathrooms was so full of waste, at least 4 inches high in there. It smelled just like a hog pen.”He sopped up the murky, foul-smelling water and doused the floor with bleach. But the sewage kept coming. On rainy days, it overflowed from drainage ditches into his yard, carrying wads of toilet paper and human waste.The eight-bedroom home in Cahokia Heights, Illinois, had been a source of pride for Byrd when he first built it in 1996. He spent a lot of time outside, caring for his vegetable garden and watching wildlife wander through the backyard. But trying to stop the sewage backups quickly became his main focus, consuming countless hours and thousands of dollars of his savings.“It was a dream house, until the floods came,” says Byrd, now 67. “That house broke me down.”Read the rest at sciencefriday.com.Transcript for this segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.