too much
Well, considering that you don't turn on the water while you're brushing, and only turn it on to fill your cup, and rinse your toothbrush, I would say probably 1-2 gallons wasted. Of course, this is only an estimate, and I can't back this up with statistics and such, but I'm sure this is somewhere close to a definite answer. :)
Shower, Shower heads can usually allow anywhere between 2.5 and 5 gallons of water a minute. Toilets can use this volume in a single flush. As most showers last longer than one minute the shower volume is considerably higher.
A 50mm (2 inch) shower waste trap.
we waste 10 gallons a day becaus of motor cars we waste 10 gallons a day becaus of motor cars
depending on opening and pressure possibly 2,000 GPM with no flow restrictors an open pipe, no shower head, will pump around 10 gallons per minute. a high volume shower head, about 8 gpm and highly restricted will dump less than 3 gallons per minute. try it yourself, use a garden hose and a 5 gallon bucket and shut the hose off at 30 seconds. double that for the quantity you would get at 60 seconds.
3000 gallons
electrical energy forces the water out.
A leaky faucet that drips four ounces of water per minute can waste approximately 5 gallons of water each day. This translates to about 2,082 gallons per year if left unattended. Repairing the leak can help conserve water and reduce utility bills.
about 2 gallons
55 gallons
A shower drain plumbing diagram typically includes the shower drain, trap, waste pipe, and vent pipe.