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Flooding Information

Sandbags Available to San Mateo Residents
Sandbags are critical tools in storm preparedness, therefore, we make them available to our residents year round.

Flooding Safety Tips
A flood can cause tragic losses to families, but to protect against the unexpected loss of life, CPSC and ESFI have some important safety advice:

  • Do not use electrical appliances that have been wet. Water can damage the motors in electrical appliances, such as furnaces, freezers, refrigerators, washing machines, and dryers.
  • If electrical appliances have been under water, have them dried out and reconditioned by a qualified service repairman. Do not turn on damaged electrical appliances because the electrical parts can become grounded and pose an electric shock hazard or overheat and cause a fire.
  • Before flipping a switch or plugging in an appliance, have an electrician check the house wiring and appliance to make sure it is safe to use.
  • Use a ground fault circuit interrupter (GFCI) to help prevent electrocutions and electrical shock injuries. Portable GFCIs require no tools to install and are available at prices ranging from $12 to $30.
  • Electrical circuit breakers, fuses, GFCIs, receptacles, plugs, and switches can malfunction when water and silt get inside. Discard them when they have been submerged
  • When using a wet-dry vacuum cleaner or a pressure washer be sure to follow the manufacturer's instructions to avoid electric shock.
  • Do not allow the power cord connections to become wet. Do not remove or bypass the ground pin on the three-prong plug.
  • Take care when stepping into a flooded basement, and be aware that submerged outlets, electrical outlets or electrical cords may be energizing the water, which is a potentially lethal trap.

San Mateo City Hall – 330 West 20th Avenue, San Mateo, CA 94403

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