Wake County Sewers and Septic Systems page, containing links to septic applications, regulations and installers.
Orange County Environmental Health Division page, including septic system and well water information.
Durham County Water and Waste site, which gives links to several water and septic service information pages.
Johnston County Wastewater site.
Chatham County Water page.
the Safe Drinking Water Hotline at 1(800)426-4791.