Enter the total number of faucets and the total number of drips per minute into the calculator to determine the total water leak.

Water Drip Formula

The following formula is used to calculate the amount of water leaking from a faucet. 

WL = D/min * 1440 * F / 15140
  • Where WL is the amount of gallons of water leak per day
  • D/min is the number of water drips recorded per minute of time
  • F is the total number of faucets

How much water is dripping from a faucet?

On average, 1 drip of water is equal to 1/15140th of gallons of water. Since we know the average volume of water in a drip, then recording the total number of drips from a faucet in an amount of time will allow you to calculate the total amount of water leaking from the faucet.

Example Problem

How to calculate water drip?

First, set up a timer and record the total amount of drips from a faucet that occurs in one minute. Perform this a few times and take the average. For this example, a total of 25 drips were recorded.

Next, determine the total number of faucets in the home. If you are just looking at one faucet, then this would equal 1. However, if there are multiple faucets, this will equal that number. In the case of the example, there are found to be 4 faucets. To get an even more accurate amount of water leakage, the drips per minute should be measured from each individual faucet and then average.

Finally, using the formula above, calculate the daily water leakage. From the daily amount, the weekly, monthly and yearly amounts can also be found.

WL = D/min * 1440 * F / 15140

WL = 25 * 1440 * 4 / 15140

WL = 9.541 gallons /day

WL = 66.57 gallons/week

WL = 279.63 gallons/month

WL = 3366 gallons/year