Emergency Plumbing in California: What to Do Before the Pro Arrives

Know These Shutoffs Before an Emergency Happens

When water is flooding your house is the worst time to figure out where the shutoff is. Know these locations now:

• Main water shutoff: Usually in the garage, basement, or outside near the water meter. Turn clockwise to shut off the entire house.
• Water heater shutoff: Cold supply line above the tank. Turn clockwise.
• Toilet shutoff: Oval valve on the wall behind/under the toilet. Turn clockwise.
• Sink shutoffs: Under each sink (hot and cold). Turn clockwise.
• Washer shutoffs: Behind the washer. Turn both handles clockwise.
• Irrigation shutoff: At the backflow preventer near your water meter or hose bib.

Burst Pipe Emergency

1. Shut the main water off immediately. Clockwise.
2. Open the lowest faucet in the house (usually an outdoor hose bib or basement) to drain water pressure from the system.
3. Turn off the water heater — if water drains from the house, the heater can run dry and overheat.
4. If water reached any electrical outlets or the electrical panel, shut off the breakers to those circuits.
5. Photograph the damage for insurance before you start cleanup.
6. Start water removal with shop vacuums, towels, and mops.
7. Call a 24-hour plumber and water damage restoration (ServPro, 911 Restoration).

Overflowing Toilet

1. Turn the oval shutoff valve on the wall behind the toilet clockwise until it stops.
2. Remove the toilet tank lid and lift the rubber flapper to stop water flow.
3. Clear the clog with a flange plunger or a toilet auger.
4. If the clog won't clear, call a plumber — forcing harder can crack the bowl or pipes.

Water Heater Leaking

Small drip from pressure relief valve (T&P)

The T&P valve is a safety device. A slight drip after a hot water use is normal. A steady drip or stream means either (1) the valve is faulty or (2) tank pressure is too high — both require immediate service.

Water pooling under the tank

The tank itself is leaking. This only gets worse — never better. Replace immediately.

1. Shut off the water supply to the heater
2. Shut off the gas (gas heater) or breaker (electric)
3. Call a plumber for same-day replacement (typically $1,400–$2,800 installed in California)

Water heater making popping/rumbling sounds

Sediment buildup in the tank. Not an emergency but schedule a flush within 30 days before it progresses.

Garbage Disposal Emergency

Disposal won't turn on

1. Press the red RESET button on the bottom of the disposal.
2. Check the kitchen breaker.
3. If it hums but doesn't spin, insert the Allen wrench (usually shipped with the unit) into the bottom center port and rotate both directions to free the blades.

Disposal leaks from the bottom

Tank is cracked — needs replacement. Shut off the breaker and call a plumber.

Disposal leaks from the top (between disposal and sink)

The mounting ring or gasket has failed. Can often be re-seated; may need replacement.

Sink Clogged

1. Remove standing water with a cup.
2. Try a sink plunger (different from a toilet plunger — flat cup, not flange).
3. If that fails, remove the P-trap under the sink (place a bucket below it).
4. Clean the trap and reinstall.
5. If water still won't drain, the clog is further down the line — call a plumber with a snake.

Do NOT Use Chemical Drain Cleaners on Emergencies

Drano and similar chemicals eat through pipes over time (especially PVC), and they're extremely dangerous if a plumber later has to open the pipe with chemical residue inside. Use a plunger, auger, or call a pro.

California 24-Hour Plumber Pricing

Insurance Tips

1. Photograph damage before cleanup
2. Keep receipts for emergency materials and services
3. Save any damaged items for adjuster inspection
4. Document every call (plumber, insurance, restoration) with time and content
5. California homeowner's insurance usually covers sudden water damage but NOT slow leaks that have been ongoing for weeks

Book California Plumbing Service

For non-emergency plumbing — faucets, toilets, garbage disposals, leaks — Zomg The Handyman offers same-day service across California. For true emergencies, call a 24/7 plumbing company immediately. See our plumbing services.