When to Call an Emergency Plumber vs. Wait Until Morning
Not every plumbing problem needs a 2 a.m. service call, but some do. How to tell the difference, what to do before help arrives, who to call for gas and street sewer problems in Los Angeles, and what emergency service costs.
The cost of waiting
Some plumbing problems get worse with every minute: water you cannot stop, sewage coming up into the house, or a gas smell. Others are annoying but can wait for a regular appointment, and waiting saves you the after-hours charge. Knowing which is which protects your home and your wallet.
Call immediately: burst or severely leaking pipes
If a pipe has burst, a supply line has failed, or a shutoff valve will not close, turn off the main water shutoff and call an emergency plumber. Water soaks into walls, flooring and insulation quickly, so this is never a wait and see situation. A water heater pouring water from its base or discharging from its relief valve belongs in the same group.
Call immediately: sewage backup
If sewage is backing up into a tub, toilet or floor drain, stop using water everywhere in the home and call right away. Every flush, dishwasher cycle or laundry load sends more water toward the blockage and back up through the lowest drain. Sewage carries bacteria, so do not clean it up without protective equipment.
If the overflow is coming from a manhole or the sewer in the street rather than from inside your home, it is a city problem: report it to LA Sanitation's 24-hour Customer Care Center at 1-800-773-2489.
Call immediately: a gas smell
A gas smell is not a plumbing call first. SoCalGas says that if you smell natural gas or suspect a leak, you should immediately evacuate the area and call SoCalGas at 1-800-427-2200 from a safe location, and call 911 promptly if a leak may endanger life or property. Do not switch lights on or off or use a phone inside the house. Once the gas company has made the area safe, we handle the gas line repair and relight the appliances.
Call immediately: no water at all
A sudden loss of water throughout the home, with no scheduled outage in your area, can mean a failed pressure regulator, a main shutoff stuck closed, or a break in the line. Both of the first two are usually fixable the same visit. It is especially urgent if someone at home depends on running water for medical reasons.
Can usually wait: slow drains
A single slow drain is annoying but rarely an emergency. Avoid chemical drain cleaners, which can damage pipes and make the line hazardous to clear afterward. Book drain cleaning at a normal hour. If several drains back up at once, treat it as a main line problem and call sooner.
Can usually wait: dripping faucets and running toilets
A dripping faucet or a toilet that keeps running wastes water but will not cause immediate damage. The EPA's WaterSense program says a faucet dripping once per second can waste more than 3,000 gallons a year, so book the repair soon. For a running toilet, close the supply valve behind it until the repair.
Can usually wait: lukewarm water
Hot water that runs out faster than it used to, or a pilot that keeps going out, is worth a same-day or next-day call but rarely an emergency. Water at the base of the tank is different: close the cold supply valve above the heater, turn a gas unit's control to off, and call.
What to do before the plumber arrives
A few minutes of action limits the damage:
- Find your main water shutoff. It is usually at the front of the house near the sidewalk, in a meter box, or at the side of the house where the supply line enters. Turn it clockwise to close. If you cannot find it, call and we will talk you through it.
- For a sewer backup, stop running water everywhere in the house.
- For a gas smell, leave the house first and call SoCalGas from outside.
- Move valuables and electronics away from the water, and take photos for your insurance claim.
What happens when you call
A person answers, any hour, including holidays. The dispatcher confirms your address and what is happening, gives you an honest arrival time and gets a marked truck moving. From our Reseda base, most San Fernando Valley addresses see a technician in 30 to 90 minutes.
Every truck carries parts for the most common emergencies: angle stops, pressure regulators, water heater elements, supply line, a soldering kit and a full rooter setup, with hydro jetting equipment available when a stubborn line needs it. That is why most emergency calls are resolved on the same visit. For a burst pipe, we stop the leak, dry the area enough to inspect, and quote the repair on the spot. For a sewer backup, we clear the line, run a camera through it, and tell you plainly whether it is stable or needs follow-up work.
What emergency service costs
Emergency plumbing is usually billed as an after-hours service call plus the repair, and rates climb at night and on holidays. Our after-hours dispatch carries a trip charge of $95 to $165, which we disclose on the phone and waive when a major repair is completed on the visit. The work itself prices like any other job: clearing a backed-up main line typically runs $225 to $495, and most tank water heater replacements land between $1,800 and $3,400 installed. You approve a written flat-rate quote before any work starts, even at 2 AM.
Published Los Angeles figures show the same after-hours premium. Angi lists emergency hydro jetting in Los Angeles at $500 to $2,200.
We're here 24/7
Last Drop Plumbing & Rooter offers round-the-clock emergency service across the San Fernando Valley, with live dispatch and a typical 30 to 90 minute response from our Reseda base. We are a licensed C-36 plumbing contractor (CSLB #1120613). If you're ever unsure whether your situation is an emergency, call 818-292-3330 and we'll walk you through it, with no charge for the advice.
Frequently asked questions
- Is a slow drain a plumbing emergency?
- Usually not. A single slow drain can wait for a regular appointment. If several drains back up at once, or sewage comes up through a tub, toilet or floor drain, stop running water and call right away, because that points to a main line blockage.
- What should I do if I smell gas?
- Leave the home first. SoCalGas says to immediately evacuate the area and call SoCalGas at 1-800-427-2200 from a safe location, and to call 911 promptly if a leak may endanger life or property. Do not switch lights on or off or use a phone inside. Once the gas company has made it safe, a plumbing contractor can repair the gas line.
- How much does an emergency plumber cost in Los Angeles?
- Our after-hours dispatch carries a trip charge of $95 to $165, disclosed on the phone and waived when a major repair is completed on the visit. The repair is then quoted as a written flat rate before any work starts, for example $225 to $495 to clear a backed-up main line.
- Who do I call if sewage is coming out of a manhole in the street?
- Report it to LA Sanitation's 24-hour Customer Care Center at 1-800-773-2489. Overflows from the public sewer are the city's responsibility. If sewage is coming up inside your home, call a plumber.
Related services
Sources
- SoCalGas: Natural gas leaks
- LA Sanitation: Managing and protecting LA's underground sewer system
- EPA WaterSense: Fix a Leak Week
- Angi: How much does hydro jetting cost in Los Angeles, CA? (updated July 9, 2026)
Sources checked October 23, 2026. Prices are typical ranges, not quotes, and program terms can change.