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POL Government Bureaus & Offices Water Bureau Water Conservation Leak Detection Residential
Home Leak Detection
Indoor Leaks
Learn how to identify and repair various indoor plumbing leaks
Faucet Leaks
Brochure: Details on how to repair common faucet leaks
Underground Leaks
Learn how to determine if you have an underground leak.
How to read your water meter.
Detailed brochure about reading your meter and checking for leaks.
How do I tell if I have a leak?
Follow these easy steps to determine if you have a leak.
How do I tell if I have a leak? - Printable Version

 Follow these easy steps to determine if there is a leak.
  1. Turn off all water inside and outside the house including showers, sinks, washing machine and any appliance that uses water.
  2. Take the lid off the meter box. Be careful, as lids can be heavy, and sometimes bugs and small animals hide inside meter boxes.
  3. Watch the meter .
    • If your meter has a triangular blue or red “leak indicator” and it is spinning, you have a leak. If there is no indicator and the actual meter dial hand is moving, water is running somewhere in your system and you have a leak – go to step 4.
    • If the hand is not moving, note the position of the hand and wait ten minutes. Check the meter again, if it has moved, you have a slow leak - go to step 4. If not you do not have a leak.
  4. Locate the main shut-off valve in your house. It is usually located near the hot water heater in the basement or garage.
  5. Turn off the valve.
  6. Turn on a faucet inside the house to test.
    • If water still flows from the faucet after several seconds, the shut off valve is not working. There is no way to tell if the leak is indoors or outdoors.
    • If no water flows through the faucet, the shut off valve is working. Return to the meter.
  7. Check if the meter’s leak indicator or dial hand is moving.
    • If the leak indicator or dial hand is still moving, water is flowing between the meter and the shut-off valve. That means you have an underground leak.
    • If it is not moving, then you have an indoor leak.