Water pouring through a ceiling, sewage coming up a tub drain, or a gas smell in the garage? We answer (657) 669-4766 24 hours a day and send a licensed plumber with an honest arrival window.
Call (657) 669-4766Request service
Written and fact-checked by John, editor, MBA in marketing
Updated against City, utility and state sources
For a plumbing emergency in Fountain Valley, shut off the main water valve first, then call (657) 669-4766. If you smell gas, leave the house and call SoCalGas at 1-800-427-2200 or 911 from outside. If water is leaking at the meter or in the street, call the City water emergency line at (714) 593-4485.
A plumbing emergency is anything that is damaging your home right now, threatens health or safety, or leaves the house without water, toilets or heat for water.
Most of the after-hours calls we take in Fountain Valley fall into a short list. If your problem is on it, call (657) 669-4766 now, day or night. If it is not, it can usually wait for a regular appointment, and waiting often saves money.
| Problem | Emergency? | Why |
|---|---|---|
| Burst or split pipe, water spraying | Yes | Water damage grows by the minute; drywall, flooring and cabinets soak it up fast |
| Sewage backing up into a tub, shower or floor drain | Yes | Health hazard, and every flush or load of laundry makes it worse |
| Gas smell or hissing near a gas line | Yes, call SoCalGas first | Fire and explosion risk; leave the house before calling |
| Water heater leaking from the tank | Yes | A failing tank can release dozens of gallons into a garage or closet |
| Warm spot on the floor with the sound of running water | Usually | Possible slab leak under a 1960s or 1970s concrete floor |
| Only toilet in the house clogged and overflowing | Yes | No working toilet is a real problem for any household |
| No hot water | Often | Depends on who lives there; infants, elderly residents and medical needs raise the urgency |
| Slow drain or dripping faucet | No | Book a daytime visit; it will not get much worse overnight |
| Running toilet | No | Close the shutoff valve behind the toilet and book a regular visit |
Stop the water, protect people, then call. These steps take about five minutes and can save thousands in damage.
A toilet, sink or washing machine leak can usually be stopped at the small valve behind or under the fixture. Turn it clockwise until it stops. If the leak is in a wall, ceiling or slab, go straight to the main shutoff.
In most Fountain Valley homes the main valve is on the outside wall where the water line enters the house, often near the garage or front hose bib. Turn a round handle clockwise. Turn a lever handle a quarter turn so it sits across the pipe.
If water is near outlets, a water heater on an electric circuit, or the electrical panel, switch off those breakers only if you can reach the panel while standing on dry ground. If not, stay out and wait.
Close the cold water valve on top of the tank. Turn a gas unit's control knob to off or pilot. Switch off the breaker on an electric unit.
Tell us what is leaking, where, and what you have already shut off. Photos help. We give you an honest arrival window and explain what the plumber will do first.
Take photos and video of the water, the source and the damage before cleanup. Your insurer will ask for them.
Your house has two places to stop water: the main shutoff at the house, which you own, and the valve at the meter box near the curb, which belongs to the City water system.
Much of the city was built during its rapid growth in the 1960s, and many homes from that era have the main valve on an exterior wall. Look where the copper or galvanized line rises out of the ground, often on the side of the house that faces the street. On some homes it sits in the garage or near the water heater.
Older gate valves with round handles can seize after decades without use. Turn gently. If it will not move, do not force it with a wrench, because a snapped stem can make the leak worse. Go to the meter instead and call us.
The water meter sits in a concrete box near the sidewalk or curb. The meter and the valve inside the box are City equipment. In a true emergency, if your house valve will not close, call the City water emergency line rather than prying at the meter.
If water is coming up out of the meter box, the sidewalk or the street, that is the City's to fix. Call the City of Fountain Valley water emergency line at (714) 593-4485. For routine service questions, City Water Services is (714) 593-4420.
Leave the house first, then call SoCalGas at 1-800-427-2200 or 911 from a safe location. Call a plumber only after the area is safe.
SoCalGas tells customers to evacuate immediately if they smell natural gas, suspect a leak, or see damage, and to call from a safe location. SoCalGas also says to call 911 if a leak may endanger life or property, or if you cannot reach SoCalGas. SoCalGas suggests keeping a 12 inch or larger adjustable wrench with your emergency supplies so the meter can be shut off when needed.
Once SoCalGas has made the area safe, the repair on your side of the meter is plumbing work. That is where we come in. Gas lines in Fountain Valley homes often run under the slab or through the attic to the water heater, furnace, range and dryer, and the City has a specific handout on gas piping in slabs. The City requires a permit to repair or alter a gas system, and a repaired line should be pressure tested before gas is turned back on. Our gas line plumber page covers leak repair, new lines and testing in detail.
Stop all water use in the house, keep people and pets away from the sewage, and call a plumber to clear the line.
A sewage backup usually shows up at the lowest drain first: a shower, a tub, or a floor drain. On a single-story slab home, that is often the hall bathroom tub. Every toilet flush, shower and dishwasher cycle adds to the overflow, so stop using water entirely until the line is clear.
The City of Fountain Valley's sewer guidance says property owners are responsible for maintaining their private sewer lateral, the pipe from the house to the public sewer main. That includes the part under the sidewalk and street. So when the clog is in your lateral, the repair is yours. When sewage is coming out of a manhole or a City cleanout in the street, that is the sewer agency's to handle.
Tell everyone in the house. Turn off the washing machine and dishwasher if they are running.
Raw sewage carries bacteria. Keep children and pets out of the area and wear gloves and boots if you must go near it.
Many homes have a sewer cleanout with a screw cap outside, near the front of the house. If sewage is seeping from it, the blockage is downstream toward the street. Do not open it yourself if it looks pressurized.
We clear the line, then camera it so you know whether it was grease, roots, or a broken pipe. See drain cleaning and hydro jetting for how we clear main lines.
The City asks residents to report spills. The 24-hour pollution reporting hotline is 1-877-89-SPILL (1-877-897-7455). When it is safe, sandbags or other material in the flow path help keep sewage out of storm drains.
If a camera shows a cracked clay or cast iron lateral, our sewer line repair service explains spot repairs, replacement and lining. Our guide to sewer lateral responsibility explains exactly where your pipe ends and the City main begins.
Local housing and local water shape what fails: slab homes from the 1960s and 1970s, hard groundwater, and original drain lines.
Many Fountain Valley homes have copper supply lines in or under the concrete slab. Typical signs are a warm floor, the sound of running water with every tap closed, or a water bill that jumps. We locate the leak before anyone opens a floor. See leak detection and slab leaks.
The City's 2025 water averaged about 13 grains per gallon of hardness. Sediment builds in tanks and shortens their life. A tank that rusts through can flood a garage. See water heater repair and replacement.
Grease, wipes and tree roots are the usual causes. Older clay and cast iron laterals let roots in at the joints, especially on streets with mature trees in the north end of town.
Small leaks in aging copper often show up as a stain on a ceiling or a damp wall. One pinhole can mean more are coming. When they keep coming back, whole-house repiping may be the long-term fix.
At night the goal is to stop the damage and make the house usable; the permanent repair sometimes waits for daylight, parts and a permit.
We answer the phone 24 hours a day, seven days a week, including holidays. When you call, we ask a few questions, tell you what to shut off, and give you an honest arrival window based on where the plumber is coming from and what else is in progress. We do not promise a minute count we cannot keep.
Here is how most night calls go:
Some work simply cannot be finished at 2 a.m. The City of Fountain Valley Building Division counter at City Hall, 10200 Slater Ave, is open Monday through Thursday from 7 a.m. to 6 p.m. and closed Fridays. Permitted work such as a water heater replacement, a gas line repair or a sewer lateral replacement may need a permit pulled during those hours, though the emergency step that stops the damage does not have to wait. Our Fountain Valley plumbing permit guide lists which jobs need one.
As a rule, the City handles problems in its mains and at its meters, the property owner pays for pipes on the property side, and insurance decisions depend on your policy.
| Part of the system | Who to call | Who usually pays |
|---|---|---|
| Water main in the street, leak at the meter box | City water emergency line (714) 593-4485 | City of Fountain Valley |
| Supply pipes in the house, under the slab, and to fixtures | A plumber | Property owner |
| Private sewer lateral, house to the City main, including under sidewalk and street | A plumber | Property owner (per City sewer guidance) |
| Public sewer main, overflowing manhole | Sewer agency; spill hotline 1-877-89-SPILL | Sewer agency |
| Gas leak, any location | SoCalGas 1-800-427-2200 or 911, from outside | SoCalGas makes it safe; repairs on house piping are the owner's |
| Water heater, fixtures, appliances | A plumber | Property owner, or landlord for rentals |
Renting? Call your landlord or property manager first unless water or gas is an immediate danger. In condos and townhomes, the association may own pipes in shared walls or the main sewer line, so check your CC&Rs or call the management company. Insurance coverage varies widely by policy. Take photos, keep receipts, and call your insurer early. We provide a written description of what failed and what we did, which is what most adjusters ask for.
Published estimates for Fountain Valley put a typical plumbing job at $117 to $391, with larger emergencies like a burst pipe far higher.
These figures come from This Old House's Fountain Valley plumbing page, updated April 18, 2024. They are published estimates, not our prices. Night, weekend and holiday calls, access problems and code upgrades can move a real job well outside them. You always get a written price before work starts.
| Job | Published average |
|---|---|
| Typical plumbing job | $117 to $391 |
National ranges from Angi and HomeAdvisor are on our plumbing costs guide, including slab leak detection and repair, main line clearing and sewer replacement.
Most emergencies give warning signs first; catching them early turns a night call into a scheduled repair.
EPA WaterSense estimates the average household's leaks can waste more than 9,300 gallons of water every year, and that nine percent of homes have leaks wasting 50 gallons or more per day. A slow leak under a slab is often one of them.
Ask for a written price, the contractor's California license number, and whether the job needs a permit, before anyone starts work.
Pressure and panic make it easy to say yes to the first truck that shows up. A few questions protect you:
We serve every part of Fountain Valley, from the north end near Los Amigos High to the Mile Square Park area, central Fountain Valley around Brookhurst St and Warner Ave, and the businesses of Southpark. Commercial clients with after-hours needs can see our commercial plumbing page.
A real person answers 24 hours a day. You get an honest arrival window and a written price before any work starts.
Yes. We answer (657) 669-4766 24 hours a day, seven days a week, including holidays. A licensed plumber is dispatched with an honest arrival window, and you get a written price before any work starts.
Shut off the water. Use the valve behind the fixture if the leak is there, or close the main shutoff on the outside wall of the house. Turn off power to anything wet if you can do so from dry ground, then call a plumber and take photos for your insurer.
Call the City of Fountain Valley water emergency line at (714) 593-4485. The meter, the valve on the street side of it, and the main in the street belong to the City. Leaks on the house side of the meter are the owner's to repair.
Leave the house right away with everyone and pets, then call SoCalGas at 1-800-427-2200 or 911 from a safe location. Do not light anything or switch lights or appliances on or off. Once SoCalGas makes it safe, a plumber can repair the house piping.
If the blockage is in your private sewer lateral, you do. The City says property owners maintain the lateral from the house to the public main, including the part under the sidewalk and street. If sewage is overflowing from a manhole in the street, that is the sewer agency's responsibility.
Sometimes, but often the night visit is about stopping the leak and making the area safe. A replacement in Fountain Valley needs a City permit, and the permit counter at City Hall is open Monday through Thursday. We give you a written plan and price for the replacement.
Common signs are a warm spot on the floor, the sound of running water when every fixture is off, a sudden jump in your water bill, or a water meter that moves during a two-hour no-use test. Many 1960s and 1970s Fountain Valley homes have copper lines under the slab.
This Old House lists a typical Fountain Valley plumbing job at $117 to $391 as of April 2024. Larger emergencies cost more. Call (657) 669-4766 for an exact quote. You get a written price before any work starts.
It depends on your household. For homes with infants, elderly residents or medical needs, yes. If the tank is leaking, it is an emergency. If the heater simply stopped heating and nothing is wet, it can often wait for a morning appointment.
Facts on this page come from these public sources, checked October 31, 2026.