Detect a water leak

Determine if you have a leak

  • Turn off all faucets and water-using appliances
  • Locate your water meter and lift the cover to see the meter dial
  • If the needle is moving, you have a leak
  • If the needle appears to be still, record the meter reading or mark the needle position with a pencil or piece of tape
  • Keep the water off. Wait at least 15-30 minutes
  • Reread the meter gauge or check the needle location again. If the needle has moved, you could possibly have a leak somewhere in your system
  • If you have a leak, contact a plumber or leak detection agency to find the source

Determine if your leak is inside or outside your home

  • Shut off the main water valve to the inside of your house
  • Return to the water meter and lift the cover to see the meter dial
  • If the needle appears to be still, record the meter reading or mark the needle position with a pencil or piece of tape
  • Keep your water off and wait at least 15-30 minutes
  • If the needle has moved and the water is shut off to the house, you have a leak somewhere outside of the house
  • If the meter has not moved and the water to the house is shut off, your leak is somewhere inside the house

Contact us

New water service and customer service
For account information, billing questions or to make a payment
Website
Email

844-463-6567

Non-emergencies
Email

650-330-6750

Emergencies
Monday through Thursday, 7:30 a.m. to 4:30 p.m.
Alternating Fridays, 7 a.m. to 3:30 p.m.

650-330-6780

After-hours or weekends

650-330-6300

Report water waste
Online

650-330-6750