State of the Planet

News from the Columbia Climate School

California4

  • What Do You Pay for Water?

    In the US we spend on average $3.75 for every 1,000 gallons. However, averages are misleading –  prices range from $1.30 in Phoenix to over $7.70 in Columbus Ohio. This map below shows relative pricing for the 30 largest US municipalities. Take a look at Florida (Miami $1.60) compared to the relatively water rich east…

Rainforest and Columbia campus collage banner with text "UN COP30, Belem, Brazil, Nov 10-21, 2025"

During COP30—the 2025 UN Climate Change Conference taking place November 10–21 in Belém, Brazil—experts from Columbia Climate School and Columbia University will be contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More

  • What Do You Pay for Water?

    In the US we spend on average $3.75 for every 1,000 gallons. However, averages are misleading –  prices range from $1.30 in Phoenix to over $7.70 in Columbus Ohio. This map below shows relative pricing for the 30 largest US municipalities. Take a look at Florida (Miami $1.60) compared to the relatively water rich east…