rural alabama where help is needed. >> reporter: america in 21st cee in the backyards of the rural poor. in lowndes county, alabama, perman hardy knows all about it. >> when there's a lot of rain you cannot flush the toilet. >> reporter: if you did it would be all over your house. >> yes, when it goes bloop, bloop, get ready, here it comes. >> reporter: in the unincorporated areas of this county, the martin luther king famously led selma to montgomery march, there's no municipal sewage system and for an estimated 80% of households no adequate september system either. >> backs up in the shower, backs up in the tub, gnats everywhere. >> reporter: r raw sewage flooded his mother's house. >> this is the tub that had the