American Water Works stock (US0304201033): Largest US water utility by customers

American Water Works, the largest water and wastewater utility in the US by customers served, continues to expand through regulated operations and infrastructure investments amid growing demand for reliable water services.

American Water Works serves over 14 million people across 24 states and supports critical military installations as the largest publicly traded water and wastewater utility in the nation. The company operates through a regulated model, delivering essential services with a focus on reliability and sustainability. Recent infrastructure investments underscore its role in addressing aging water systems nationwide.

As of: 11.05.2026

By the editorial team – specialized in equity coverage.

At a glance

• Name: American Water Works Company, Inc.
• Sector/industry: Utilities / Water
• Headquarters/country: Camden, New Jersey, USA
• Core markets: 24 US states
• Key revenue drivers: Regulated water and wastewater services
• Home exchange/listing venue: New York Stock Exchange (AWK)
• Trading currency: USD

American Water Works: core business model

American Water Works operates primarily through its Regulated Businesses segment, which accounts for the majority of revenue. This segment provides water and wastewater services to approximately 3.5 million customers across 16 states as of the 2023 annual report published in February 2024. The company benefits from rate regulation by state public utility commissions, ensuring stable returns on invested capital.

In addition to regulated operations, American Water Works maintains Other segments including Military Services, which supplies water to US military bases under long-term contracts, and Market-Based Solutions for non-regulated projects. This diversified structure supports resilience against regional economic fluctuations, with a strong emphasis on infrastructure renewal programs.

Main revenue and product drivers for American Water Works

Revenue is predominantly driven by water distribution and treatment services, supplemented by wastewater management. In 2023, the company reported total operating revenues of $4.23 billion, up from prior years, driven by customer growth and approved rate increases, according to its 10-K filing as of February 2024. Key drivers include acquisitions of local utilities and capital investments exceeding $1 billion annually in system upgrades.

Wastewater services contribute growing revenue as urban areas expand, while the Military Services segment provides stable, government-backed income. For US investors, American Water Works offers exposure to essential infrastructure with demographic tailwinds from population growth in its service territories.

Industry trends and competitive position

The US water utility sector faces challenges from aging infrastructure, with the American Society of Civil Engineers estimating a $473 billion funding gap for water systems through 2032. American Water Works holds a leading position as the largest by customer base, operating over 1,000 systems and benefiting from economies of scale in procurement and technology deployment.

Competitive advantages include a robust acquisition strategy, with recent purchases adding rate base growth, and investments in smart water technologies for leak detection and efficiency. The company's scale positions it well against smaller regional peers in consolidating markets.

Why American Water Works matters for US investors

Listed on the NYSE under ticker AWK, American Water Works provides US investors with direct exposure to a defensive utility sector essential to public health and economic stability. Its operations span key growth regions like the Sun Belt, aligning with US population shifts and housing demand that drive water service needs.

With a focus on regulated returns, the stock offers a link to infrastructure spending trends, including federal programs like the Bipartisan Infrastructure Law, which allocates billions for water projects nationwide.

Conclusion

American Water Works maintains a strong position as the nation's leading water utility, supported by regulated operations, infrastructure investments, and strategic acquisitions. Its scale and diversification provide stability amid sector challenges like aging pipes and regulatory oversight. Investors track its progress in rate base expansion and service reliability for insights into essential US infrastructure trends.

Disclaimer: This article does not constitute investment advice. Stocks are volatile financial instruments.