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us Home & property emergencies toilet overflowing • toilet keeps refilling • toilet won’t stop running • toilet tank overflowing • water rising in toilet bowl • bathroom flooding • can’t stop toilet water • shut off valve toilet • toilet supply valve • main water shutoff • home water emergency • plumber emergency call • landlord urgent repair • apartment water leak • water near electrical • prevent water damage • float stuck toilet • panic home leak • stop toilet from flooding

What to do if…
a toilet keeps refilling or overflowing and you cannot stop it

Short answer

Shut off the water at the toilet’s supply valve (or your home’s main water valve) first, then avoid electrical hazards and water damage while you arrange urgent repair (landlord/maintenance/emergency plumber).

Do not do these things

  • Don’t keep flushing repeatedly to “reset” it — that can make the overflow worse.
  • Don’t touch outlets, switches, power strips, or appliances if you’re standing in water or water is reaching electrical items.
  • Don’t crank a stuck valve hard with tools if it won’t budge — breaking it can cause a larger leak.
  • Don’t leave the bathroom unattended with the supply still on.
  • Don’t delay notifying building maintenance/your landlord if you rent — overflows can quickly affect other units.

What to do now

  1. Create a safer pause: watch your footing (slip risk). If water is spreading, keep kids/pets out of the area and keep water away from anything electrical.
  2. Shut off the toilet supply valve (fastest): look behind the toilet for the shutoff valve on the small pipe/hose. Turn it clockwise until it stops.
    • If it’s a lever-style valve, move it to the “off” position (often perpendicular to the pipe).
  3. If you can’t stop it there, shut off water to the home: locate your main water shutoff valve (commonly where the water line enters the house—basement, garage, utility room—or near the meter) and turn it off.
  4. Lower the water level (only once the water supply is off): flush once (or hold the flush briefly) to drain the tank and reduce ongoing spill.
  5. Limit damage immediately: use towels to block water from spreading; move items off the floor; set a container to catch drips if water is tracking down the tank. Ventilate if you can.
  6. Contact the right help now:
    • If you rent: call your landlord/building maintenance emergency number and say you had to shut off water due to an overflowing toilet.
    • If you own: call an emergency plumber.
    • If you’re in a multi-unit building and water may be affecting neighbors, notify the building manager/super if applicable.
  7. If water reached electrical outlets/fixtures: do not touch switches or outlets while standing in water. If you can do so from a dry, safe place, shut off power at the main breaker to the affected area; otherwise keep the area clear and contact a qualified professional/your utility for guidance.

What can wait

  • You do not need to diagnose the internal toilet mechanism right now.
  • You do not need to take anything apart while stressed and water is actively spreading.
  • You can handle documentation, insurance questions, and full cleanup after the water is stopped and repair is on the way (unless your landlord/insurer requests immediate photos).

Important reassurance

Toilet overflows and “won’t stop refilling” problems are common and usually repairable. The most important thing is that you can nearly always stop the damage by shutting off the supply.

Scope note

These are first steps for stabilizing the situation and preventing avoidable damage. Repairs and drying may require a plumber or building maintenance.

Important note

This is general emergency guidance, not professional plumbing, electrical, or legal advice. If you’re unsure about electrical safety, stay out of wet areas near outlets/appliances and get professional help.

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