Water heater leak emergency: what to do right now
When a tank water heater leaks, the water spreads from the base across the garage slab, closet floor or hallway and soaks whatever sits low. Close the cold water inlet valve on the pipe feeding the tank, set the heater to off, and call our 24/7 line at (213) 776-0579. A licensed plumber repairs or replaces the heater. We extract the water, dry the building and clean up what it touched.
Safety first: cold inlet, gas, power and hot water
Start with the cold water inlet, usually a handle or wheel on the pipe at the top of the tank. Turning it clockwise stops new water from refilling the tank. If the handle will not move, shut the main water valve for the house instead.
- Gas heater: turn the gas control to off or pilot. If you smell gas, leave the house and call the gas utility or 911 from outside.
- Electric heater: switch off its breaker, but only if the panel is dry and you can reach it standing on dry ground.
- Never relight a pilot or restore power to a heater that has been sitting in water.
- Stay back from steam and standing water, because tank water can be hot enough to scald.
Water near wiring or a gas line
If the water is touching outlets, a panel or the heater's own wiring, do not step into it. Call the utility or 911 first for any gas or electrical risk. We can start extraction once the area is safe to enter.
Where leaking tanks do their damage
Many South Gate homes keep the water heater in a garage, a hall closet or a utility alcove. Garage slabs let water run toward the door or into walls, while closet leaks soak baseboards and slip under flooring in the next room. Carpet and drywall wick water upward, so damage reaches higher than the puddle suggests.
Water that pools for a day or more can pick up dirt and debris and shift from clean supply water toward a dirtier category. The ANSI/IICRC S500 standard, the published industry reference for professional water damage restoration, uses those categories to decide what is dried in place and what is removed.
| What you see | Likely meaning | What to do |
|---|---|---|
| Puddle growing around the base | Tank wall or a bottom fitting has failed | Close the cold inlet, switch off fuel or power, call |
| Water from the pipe on the side or a discharge tube | A relief valve or connector is leaking | Shut the inlet and have a plumber check pressure |
| Wet carpet or warped floor in the next room | Water traveled under the wall | Call the 24/7 line before the pad stays wet |
How the crew handles a failed water heater
The crew arrives with extraction units and portable pumps to pull the water off the slab, carpet and hard floors. Moisture meters and a thermal imaging camera then trace where it went. Clean water caught early often lets carpet be dried in place, as our wet carpet restoration page explains, though the pad is usually replaced.
Extract
Pumps and extraction units remove the bulk of the water from floors and low areas.
Map the wet zone
Moisture readings and thermal images mark what is wet behind baseboards.
Clean and remove
Wet carpet pad, swollen baseboard or soaked insulation that cannot dry is taken out. Our water damage cleanup page covers that stage.
We do not repair or replace water heaters or pipes. A licensed plumber does that, and we can work alongside one while the drying starts. The first-hours steps are also on our water mitigation page.
Water heater leaking now?
Call (213) 776-0579 any hour. Shut the cold inlet first if you can.
What changes the cost of a water heater leak
- How much water the tank released and how long it sat
- Carpet, pad, laminate or hardwood that must be lifted or removed
- How far water traveled into walls and adjoining rooms
- The number of drying days and equipment pieces needed
Insurance and a failed water heater
A tank that bursts or fails suddenly is the kind of sudden and accidental event homeowners policies often cover, while a leak that dripped for months is often treated as gradual and may not be. Check your policy or ask your insurer before you decide what to claim. We keep moisture readings and dated photos to support your own claim.
Mistakes to avoid after a heater leak
Do and do not
- Do close the cold inlet before anything else
- Do keep children and pets away from hot water and steam
- Do not relight the pilot or flip the breaker back on after a soaking
- Do not close the closet door on wet walls and walk away
- Do tell the crew how old the home is and where the heater sits
Heater leak cleanup, any hour
A call starts the extraction plan. The line is answered 24/7.
South Gate water, permits and your heater
South Gate's 2021 water quality report, the Consumer Confidence Report, gives total hardness as 226.3 mg/L, within a range of 200 to 250. Hard water leaves mineral scale and sediment in tanks and on fittings. Ask the plumber whether sediment played a part and whether flushing the next tank is worth planning.
According to the city's website, plumbing, mechanical and electrical improvements typically need permits, and its Building and Safety Division at 8650 California Avenue, (323) 563-9549, can say whether a replacement heater does. Replacing a water heater usually involves plumbing and sometimes gas work, so ask the city before the plumber starts.
Golden State Water customers in South Gate and Hollydale can reach customer service at 1-800-999-4033 around the clock, so check your bill to see whether the City or Golden State serves you. Find your provider and its 24-hour number on your water bill now. Nearby, we also work in Compton and Downey.
Water heater leak cleanup questions
Yes. The 24/7 line is answered around the clock, and same-day response is offered when crews can be spared. We do not promise an arrival time.
Yes, as long as you can do it safely. Set a gas heater's control to off or pilot, and switch off an electric heater's breaker only if the panel is dry. If you smell gas, leave and call the gas utility or 911.
No. A licensed plumber replaces or repairs the heater and its connections. We handle the water damage, and we can work alongside the plumber.
At first it usually is, and clean-water cleanup is simpler. Water that sits for a day or more can become dirtier, which changes what must be removed under the ANSI/IICRC S500 categories.
It depends on the flooring, the walls and how far the water traveled. We measure with moisture meters instead of promising a fixed number of days.
Sudden failures are often covered and gradual leaks often are not. Check your policy or ask your insurer.