Second Quarter/YTD 2023 Results

Pure-Play Regulated Water and Wastewater Utility Business Washington AMERICAN WATER NATIONAL FOOTPRINT Iowa Ohio Illinois Utah California Indiana Kansas Missouri Hawaii Oklahoma Texas Regulated Operations* 53,500 miles of pipe 570 water treatment plants 175 wastewater treatment plants 1,100 wells and 73 dams New York AMERICAN WATER Regulated Customer Count* 4.9% 11.2% 22.5% Pennsylvania New Jersey 5.6% West Virginia 3.4M Total Maryland Virginia Kentucky Tennessee 9.6% Regulated Water and Wastewater Operations Alabama Georgia Military Services Group 10.7% Florida Louisiana Military Services Group . Regulated-like earnings Serves 18 military installations 12 Army 5 Air Force • 1 Navy Customer Connections 14.6% 20.9% Pennsylvania New Jersey ■Missouri Illinois Indiana California ■ West Virginia ■ Other *As of December 31, 2022 4

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