Greg Hannah's Plumbing & Sewer serves Chicago, the suburbs and the surrounding towns and areas of Illinois including Cook County, Du Page County, Berwyn, Brookfield, Burr Ridge, Cicero, Clarendon Hills, Countryside, Darien, Downers Grove, Hillside, Hinsdale, Forest Park, Indian Head Park, La Grange, La Grange Park, Lisle, Lyons, Naperville, North Riverside, Oak Brook, Oak Park, River Forest, Riverside, Stickney, Westchester, Western Springs, Westmont, Willow Springs, Willowbrook, Woodridge