corey walters works at the city's water treatment plant, responsible for delivering the kind of water residents actually need. >> matthew inundated this entire plant for a period of roughly a month. we had emergency water filtration trailers that were brought in that we had up and running within two weeks. but the plant itself stayed offline for a month. we're making every precaution that we can to prevent a matthew from happening again. >> reporter: pastor foreman's church has also been preparing, filling sandbags in hopes that this time they can keep the water at bay. what do you want people at home to know? what can they do? what do you need? >> right now we need prayers. we've done everything man can do. now it's in god's hands and we're going to trust him. >> reporter: for "nightline," i'm amy robach in wilmington, north carolina. >> our thanks to amy. >>> coming up, staring into the eye of a hurricane, and not blinking. >> this special edition of "nightline" is sponsored by oral-b. i was on the fence about changing from a manual to an electric toothbrush. but my hygienist said g