Irrespective of how this number is calculated, whether is blue/green water etc here is some comparison data for context, since I personally think that hearing big numbers without any point of reference is pointless.
Annual withdrawals (2015)
- Thermoelectric power: ~48.5 trillion gal
- Irrigation: ~43.1 trillion gal
- Public supply: ~14.2 trillion gal
- Self-supplied industrial: ~5.4 trillion gal
- Aquaculture: ~2.76 trillion gal
- Mining: ~1.46 trillion gal
- Livestock: ~730 billion gal
- Total: ~117.5 trillion gal (322 Bgal/day)
Source: Estimated use of water in the United States in 2015: U.S. Geological Survey Circular - https://doi.org/10.3133/cir1441
Annual withdrawals (2015)
- Thermoelectric power: ~48.5 trillion gal
- Irrigation: ~43.1 trillion gal
- Public supply: ~14.2 trillion gal
- Self-supplied industrial: ~5.4 trillion gal
- Aquaculture: ~2.76 trillion gal
- Mining: ~1.46 trillion gal
- Livestock: ~730 billion gal
- Total: ~117.5 trillion gal (322 Bgal/day)
Source: Estimated use of water in the United States in 2015: U.S. Geological Survey Circular - https://doi.org/10.3133/cir1441