Essential Utilities is a Pennsylvania-based holding company for US water, wastewater, and natural gas distribution utilities. The company's water business serves 3 million people in eight states. Its largest service territory is in Pennsylvania, primarily suburban Philadelphia. Its Peoples subsidiary serves more than 740,000 gas distribution customers in Pennsylvania and Kentucky. It completed the sale of its West Virginia gas utility and the bulk of its nonregulated assets in 2024. Essential shareholders would own a 31% stake in American Water Works if the proposed all-stock merger closes in 2027.