Comment by rconti

yeah, our small suburban house in silicon valley can easily use 400 gallons per day on days where we water the small front and back lawns and drip irrigation, but on a non-watering day, we can use as little as 50 gallons for 2 people.

While this is "a lot" of water, when we've had an irrigation leak in a zone that runs for 5 or 10 minutes, the number can balloon to 900 gallons in a day.

The amount of water used by people who actually don't closely monitor and track their usage, with big properties, lots of plants and lawn to irrigate, must be truly mind-boggling. I wouldn't be surprised if tens of thousands of gallons per day was pretty common at a lot of houses.