The USGS Water Science School
How much is your daily indoor water use?
How much water do you use when you take a shower? Wash a load of clothes? Flush a toilet? Even brush your teeth? One important measure of water use is how much water one person uses in one day, or per-capita water use (per is Latin for by and capita is Latin for head). The number is usually expressed as gallons of water used per person per day.
Fill in this form to get a rough estimate of how much water you use inside your home on a typical day.
To make things consistent, let's assume it's a rainy and cold Saturday and you stay home all day. Think of the activities you do that use water: taking a shower, brushing your teeth, maybe washing dishes and clothes, etc. In the form below, fill in the boxes with your water-use activities, choose the submit button, and we'll give you an estimate of how many gallons of water you used.
NOTE: This survey is very general and won't take into account if you have water-conserving equipment in your house in our results; this exercise just to give you a quick idea of your water use. There are some other Web sites that will give you a more detailed and accurate estimate of your per-capita water use:
Enter your answers in the boxes below