leonard bruce has lived in rockville s lincoln park neighborhood almost his entire life. he has endured many hot summers, catching a cool breeze on his front porch. today he is watching his grass turn brown. you can t water your grass and stuff like that. you can see the grass turn brown already. it s from the heat. reporter: that s thanks to this torrent of water that climbed 100 feet into the sky. rockville s main water line ruptured, two million gallons of water lost in a geyser active for six hours. we have two broken sections. it happened right near the joint. two sections have to be replaced. reporter: crews spent tuesday digging up the old cracked pipes and around 1 made the first attempt to install the new line. problems forced crews to bring in new parts and begin again. we should at least try. always forcing people to restrict water, but we can at least try to help out the whole community. reporter: rockville residents are temporarily getting water from