The NYC Department of Environmental Protection (DEP) is a city agency responsible for managing New York City's water supply, wastewater treatment, and environmental protection. It ensures that the city's drinking water is clean and safe, serving over 9 million residents. The DEP operates a vast network of reservoirs, aqueducts, and treatment plants. In addition to water management, the DEP also focuses on protecting the environment through various programs. These include monitoring air quality, managing stormwater, and promoting sustainability initiatives. The agency plays a crucial role in maintaining the city's infrastructure and enhancing the quality of life for its residents.