Regulated State Operations

Our regulated businesses, which are our primary line of business, operate in approximately 1,600 communities in 16 U.S. states and provide water and wastewater utility services to residential, commercial, industrial and other customers, including sale for resale and public authority customers. We follow environmental and health and safety regulations set by local authorities and federal standards.

Our primary operating assets include approximately:

  • 81 surface water treatment plants
  • approximately 49,000 miles of mains and collection pipes
  • 500 groundwater treatment plants
  • 1,100 groundwater wells
  • 100 wastewater treatment facilities
  • 1,200 treated water storage facilities
  • 1,400 pumping stations
  • 81 dams

We are actively involved in helping to maintain our water infrastructure and we invest approximately $1 billion annually into our systems to ensure continued reliability for our customers, who count on us every day. In most of our service areas, high-quality water service still costs about or less than a penny per gallon.

Our regulated subsidiaries are subject to economic regulation by state public utility commissions (PUCs). That means that in each state we operate, water quality and service rates are subject to extensive regulation by state PUCs, as well as environmental, health and safety and water quality regulations by federal, state and local governments.

Our vast network of treatment plants, pumping stations, storage facilities, and approximately 45,000 miles of main and collection pipe, are all put to work each day to provide our customers with the highest-quality service.


27459RegMap2016 


Our Regulated States

California American Water
Hawaii American Water
Illinois American Water 
Indiana American Water
Iowa American Water
Kentucky American Water
Maryland American Water
Michigan American Water
Missouri American Water
New Jersey American Water
New York American Water
Pennsylvania American Water
Tennessee American Water*
Virginia American Water
West Virginia American Water

*Tennessee American Water provides water to part of northern Georgia.