Second Quarter/YTD 2023 Results

Strong and Sustainable Growth Outlook for Future AMERICAN WATER Earnings Growth Affirmed Target Targeting 7-9% EPS growth in our 2023-2027 plan and beyond Regulated Investment CAPEX Regulated Acquisitions Military Services =0.2% Group 1.5-2.5% 5-7% Dividend Growth ESG Leadership Affirmed Target Targeting 7-9% dividend growth* in Adds to TSR Exceptional 82% Total Shareholder our 2023-2027 plan and beyond Return over last 5 years** $ Affordability Adds to TSR <=1% Avg. Monthly Residential Water Bill as % of MHI*** * ** Future dividends are subject to approval of the American Water Board of Directors. As of 6/30/23 end date. Source: FactSet. *** Estimated Median Household Income (MHI) based on data from the US Census Bureau American Community Survey based on zip codes served by American Water. American Water does not collect household income data from its customers. 18

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