Citigroup Inc.

Citigroup Inc. is a U.S.-based global financial services company providing banking, markets, wealth management, payments, and related financial services. Its direct dependence on water is minimal. The company's water use is mostly limited to its offices, data centers, cooling, sanitation, and landscaping, rather than serving as an input to its primary financial services.

Citi's operational water strategy has focused primarily on reducing potable water use and increasing the use of reclaimed water within its global real-estate footprint. New and renovated buildings are equipped with water-efficient fixtures, while rainwater harvesting, graywater, and wastewater treatment systems are incorporated where possible. In areas with a suitable climate, the company uses reclaimed water for irrigation, cooling towers, and toilet flushing, thereby decreasing demand for municipal water.

Citi has applied the same principles at specific facilities. Its New York City headquarters stores rainwater for cooling towers and irrigation, while its Belfast operations harvest rainwater for toilet flushing. The company can also draw reclaimed water directly from local water utilities where available, extending these recycling practices beyond facilities with onsite treatment systems.