Second Quarter/YTD 2023 Results

American Water's High Growth Outlook and ESG Leadership Widely Recognized; Long Runway Ahead "Our investments in community systems that we acquire through our regulated business will drive significant ESG impacts for decades to come." - Susan Hardwick, American Water President & CEO ESG at AWK TM AMERICAN WATER Military Services 0.2% Group Regulated 1.5-2.5% Acquisitions Bloomberg Gender-Equality Index 2022 S&P Global Ratings ESG Evaluation Score of 87 (out of 100); Highest Score Given to a U.S. Utility and 3rd Highest Globally Included in the Bloomberg Gender Equality Index for the 5th Consecutive Year (100) Regulated Investment CAPEX 5-7% Named to Newsweek's Most Trustworthy Companies American Water Ranked #19 on Barron's 100 Most Sustainable Companies 16

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