H2O America Named to Newsweek's Greenest Companies List H2O America has been named one of America's Greenest Companies for the second year in a row SAN JOSE, Calif., Oct. 27, 2025 (GLOBE NEWSWIRE) -- H2O America (Nasdaq: HTO), one of the nation’s largest investor-owned water and wastewater utilities, has been recognized as one of America’s Greenest Companies 2026 by Newsweek and market data research firm Plant-A Insights Group. The award recognizes H2O America’s commitment to sustainability across its n ...