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| Depending on its size, a household water leak could cost you a few dollars, or thousands of dollars every month. Size of leak | Approximate gallons/month | Approximate cost/month | Leaky faucet 1/32-inch leak | 6,100 | $19 | Faulty flapper on toilet 1/16-inch leak | 25,000 | $96 | Broken sprinkler line 1/8-inch leak | 98,000 | $510 | Failed water heater relief valve 1/4-inch leak | 396,000 | $2,171 |
Check for toilet leaks Remove the toilet tank cover and drip 10 drops of food coloring or dissolving dye into the tank. After it has had time to sit for a little while, check for color in the toilet bowl. If you see any color, your know there is a leak. |