One faucet dripping once per second wastes more than 3,000 gallons a year, enough to fill dozens of bathtubs for no reason at all.
Fix the simplest leaks first, since a worn washer or O-ring costs a dollar and takes ten minutes to replace.
Check the toilet too by dropping food coloring in the tank, because a silent running toilet can waste hundreds of gallons a day.
Tighten the taps after every use and replace any faucet you cannot stop from dripping, because the savings show up on the very next bill.