American Water Works Co., Inc. engages in the provision of complementary water and wastewater services. It operates through the following segments: Regulated Businesses, Market-Based Businesses, and Other. The Regulated Businesses segment provides water and wastewater services to customers. The Market-Based Businesses segment is responsible for Military Services Group, Contract Operations Group, Homeowner Services Group, and Keystone Operations. The Other segment includes corporate costs that are not allocated to the Company's operating segments, eliminations of inter-segment transactions, fair value adjustments and associated income and deductions related to the acquisitions that have not been allocated to the operating segments for evaluation of performance and allocation of resource purposes. The company was founded in 1886 and is headquartered in Voorhees, NJ.