In a plumbing emergency, act fast: shut off the water at the fixture’s valve or your home’s main shutoff, turn off the water heater if hot water is involved, move belongings away from the water, and call a 24/7 emergency plumber. If you smell gas, skip everything else — leave the house immediately and call 911 from outside.
A burst pipe or overflowing toilet can dump dozens of gallons into your home in minutes. The few steps you take before the plumber arrives can be the difference between a quick repair and thousands of dollars in water damage. Here’s exactly what to do, San Diego.
Step 1: Shut off the water (the most important thing you can do)
Stopping the flow of water is your first priority in almost every plumbing emergency. You have two options — use whichever is closer to the problem.
- Local (fixture) shutoff: Most toilets, sinks, and water heaters have a small valve on the supply line nearby. Turn it clockwise (righty-tighty) to stop water to just that fixture.
- Main water shutoff: For a burst pipe, a leak you can’t locate, or anything major, shut off water to the entire house at the main valve.
How to shut off your water in 3 steps
- Find your main shutoff valve. In most San Diego homes it’s where the water line enters the house — near the front hose bib, in the garage, or in a covered box near the street by the water meter.
- Turn it off. Twist a round (gate) valve clockwise until it stops, or rotate a lever (ball) valve a quarter-turn so it sits crosswise to the pipe.
- Confirm it worked. Open a faucet inside — the flow should drop to a trickle and stop. The water to your home is now off.
Tip: locate and test your main shutoff today, before you ever need it. Knowing exactly where it is — and that it actually turns — saves precious minutes in a real emergency.
What to do for the most common plumbing emergencies
Burst or leaking pipe
Shut off the main water valve immediately, then open the lowest faucet in the house (and an outside spigot) to drain remaining water from the pipes and relieve pressure. Move furniture and valuables away from the water and call an emergency plumber.
Overflowing toilet
Don’t flush again. Turn the shutoff valve at the base or behind the toilet clockwise to stop the water. If there’s no valve or it won’t turn, lift the tank lid and push the rubber flapper down to seal it, or lift the float to stop the tank from refilling.
Water heater leaking or failing
Turn off the cold-water supply valve at the top of the heater. Then cut its power: flip the breaker for an electric unit, or turn the gas control valve to “off” for a gas unit. This prevents the tank from heating an empty or leaking system. Never touch a water heater you suspect is leaking gas — see below.
Sewer or drain backup
Stop using all water in the house immediately — every flush, sink, or load of laundry adds to the backup. Don’t pour chemical drain cleaner into a standing backup; it can splash and cause burns without clearing the blockage. Keep people and pets away from the contaminated water and call a plumber.
You smell gas near a water heater or gas line
This is the one emergency where you do not try to fix anything first. Get everyone out of the house right away. Don’t flip light switches, unplug anything, or use a phone inside — a spark can ignite gas. From a safe distance outside, call 911 and SDG&E, then call a licensed plumber for the repair.
No water at all
Check that your main shutoff is fully open and confirm with a neighbor that it’s not a citywide outage. If the valve is open and neighbors have water, the problem is on your side — possibly a main line break or slab leak — and needs a plumber.
Quick reference: first action by emergency
| Emergency | Do this first |
|---|---|
| Burst or leaking pipe | Shut off the main water valve |
| Overflowing toilet | Turn the toilet’s shutoff valve clockwise; don’t flush |
| Water heater leak/failure | Shut off the cold supply and the power/gas to the heater |
| Sewer or drain backup | Stop using all water immediately |
| Gas smell | Leave the house; call 911 and SDG&E from outside |
| No water in the house | Check the main valve is open; call a plumber |
While you wait: limit the damage
- Move belongings and lift rugs, electronics, and furniture out of the water.
- Soak up standing water with towels or a wet/dry vacuum to slow damage and mold.
- Cut power to the affected area at the breaker if water is near outlets or appliances — only if you can reach the panel safely and aren’t standing in water.
- Document everything with photos and video before you clean up — it helps with insurance claims.
- Open a downstairs faucet after shutting the main to drain the lines and reduce pressure on the leak.
What NOT to do
- Don’t keep flushing an overflowing or backed-up toilet.
- Don’t pour chemical drain cleaner into a full, standing backup.
- Don’t use electrical appliances or switches near standing water.
- Don’t ignore a “small” leak and hope it stops — water damage compounds fast.
- Don’t attempt gas-line repairs yourself.
Is it a real emergency, or can it wait?
Call for emergency service right away for a burst pipe, a major or uncontrolled leak, a sewage backup, no water to the home, a failing water heater, or any gas smell. Issues like a single slow drain, a dripping faucet, or low pressure in one fixture are usually safe to schedule during normal hours — as long as you can shut off the water to that fixture in the meantime.
Call San Diego’s 24/7 emergency plumber
Family-owned and serving Greater San Diego since 1977, Perry Plumbing & Pipelining answers emergency calls 24 hours a day, 7 days a week. Our licensed, insured technicians arrive with fully stocked trucks to diagnose the problem fast and fix it right — with honest, up-front pricing, even at 2 a.m.
Got a plumbing emergency right now? Call Perry Plumbing & Pipelining at (619) 472-2112 — we’re available 24/7 across San Diego.
Frequently asked questions
What counts as a plumbing emergency?
A burst pipe, a major or uncontrollable leak, a sewage or drain backup, no water to the house, a leaking or failing water heater, an overflowing fixture, or any smell of gas all count as plumbing emergencies that need immediate attention.
How do I shut off my water in an emergency?
Find your main shutoff valve where the water line enters the house — often near the front hose bib, in the garage, or in a box near the meter by the street. Turn a round valve clockwise until it stops, or rotate a lever valve a quarter-turn crosswise to the pipe, then open a faucet to confirm the water is off.
Should I turn off my water heater during a plumbing emergency?
Yes, if the emergency involves hot water or the heater itself. Shut off the cold-water supply valve at the top of the unit, then cut the power at the breaker (electric) or turn the gas control valve to off (gas).
Is an overflowing toilet an emergency?
It can be. Stop it from overflowing by turning the shutoff valve behind or below the toilet clockwise, and don’t flush again. If the overflow is sewage backing up from multiple drains, that’s a sewer-line emergency — stop using all water and call a plumber.
Does Perry Plumbing offer 24/7 emergency service in San Diego?
Yes. Perry Plumbing & Pipelining provides 24/7 emergency plumbing across Greater San Diego, with licensed, insured technicians and up-front pricing.
