Mission Viejo Plumber, From Midnight Emergencies to Everyday Repairs
Need an emergency plumber in Mission Viejo? Call any hour, day or night, and an experienced member of our staff answers. You won't be waiting for an answering service to call back or hoping someone checks a voicemail. You'll be talking with us right then.
After hours and not urgent? Book online now and pick a time that works for you.
What plumbing problem can we help with today? Tap to jump to that section on this page.
A leak, a clogged drain, or no hot water rarely waits for business hours. Call any time, and a real person picks up. We handle the whole house: leaks and slab leaks, drains and sewer lines, water heaters, gas lines, fixtures and repairs. Before any work starts, you get one written price for the whole job, so you know the number before you say yes.
Leak Detection and Slab Leak Repair in Mission Viejo
Water on the floor right now? Shut off the main water valve to the house, then call. That stops the damage while we're on the way.
In a Mission Viejo house built in the 1970s, any original water lines are now about 50 years old. Some leaks hide under the concrete. A warm spot on the floor, the sound of running water when nothing is on, or a water bill that keeps climbing are the usual signs. We start with a pressure test to confirm there's a slab leak, and we also check whether your home has a post-tension slab, because that changes how we repair it. Then we trace the copper lines with line-locating equipment, so we know exactly where they run through the slab, and use acoustic listening equipment to pinpoint the leak. We don't rely on thermal imaging: it can give false readings when a copper line sits close to the concrete, or when a recirculating hot water system warms the whole line. Then we walk you through the repair choices, from fixing the one spot to rerouting the line. Our slab leak repair page explains each option.
Water Heater Repair and Replacement
If the tank is leaking, close the cold-water valve on top of it and call us. We check whether a repair makes sense or whether the tank is done, and tell you plainly either way.
Replacing a water heater? A water heater we supply and install comes with the manufacturer's warranty, and we add our own 2-year parts and labor warranty. On a new tank water heater, we do the first flush for free within the first 6 to 9 months. While we're there, we'll show you how to flush it yourself. Rather have us take care of it? We'll book a time that works for you. Keep it up every 6 to 9 months and sediment never gets the chance to bake onto the bottom of the tank, so your water heater lasts longer. The estimate is free: the plumber looks over your current setup and prices anything needed to meet today's code, so the price you see is the whole installation. We install tank and tankless water heaters. More on our water heater repair and replacement page.
No hot water or a leak that won't wait?
Call now: (714) 964-3519Book onlineAnswered 24/7 by an experienced member of our staff · a written price before workClogged Drains and Sewer Lines
Kitchen sinks, tubs, showers, toilets and main sewer lines. We clear the stoppage and tell you what we found. If a drain keeps backing up, we can look inside the line with a sewer camera inspection so you know why. See our drain cleaning page.
Garbage disposal humming but not turning? Turn it off and press the red reset button on the bottom of the unit. If it still won't run, give us a call.
Gas Lines and Earthquake Shutoff Valves
We repair and install natural gas lines, including underground lines. For an underground leak, we find the leak, check what the pipe is made of, and in most cases dig it up to repair or replace it. New underground lines are polyethylene (PE) gas pipe installed to code, with tracer wire so the line can be located later and the steel ends wrapped to protect them. We also install earthquake gas shutoff valves that close the gas automatically in a strong quake. Smell gas? Leave the house and call your gas company from outside first. Read more on our gas line page and earthquake gas valve page.
Fixtures, Faucets and Everyday Repairs
Dripping faucets, running toilets, new sinks, garbage disposals and the small jobs that pile up. We also install automatic water shutoff valves that close the water when they sense a leak. See our repair service and fixture installation pages.
A recent Mission Viejo job: in September 2026, a homeowner's master bathroom faucet had a handle that was getting hard to turn. We removed the old widespread faucet, installed the new Moen faucet the homeowner had bought, and connected it with new braided steel supply lines. In the hall bathroom, we replaced the Moen Posi-Temp shower cartridge. Everything was tested for leaks, and the visit took about an hour and a half.
Commercial Plumbing
Businesses get the same written price before work and the same 24/7 phone. Our commercial plumbing page has the details.
Before You Let a Plumber Into Your Home
Is the company licensed? Yes. California Contractors State License Board license 517514. You can look it up yourself on the CSLB website.
Who will show up at my door? A background-checked technician, factory-trained on Noritz, Navien and Rheem tankless and Bradford White, Rheem and American (A.O. Smith) tank water heaters. Our senior plumbers track down hard-to-find problems.
Will the price change once the work starts? Not for the work we quoted. You get that price in writing before we start. Sometimes we open a wall or the slab and find something nobody could see beforehand. When that happens, we do everything we can to keep the price the same. If anything has to change, we talk with you first, before any extra work is done.
What will my house look like when they leave? We cover your floors, protect your belongings and leave the work area spotless.
What if something goes wrong later? Our work has a 1-year warranty. A water heater we supply and install comes with the manufacturer's warranty plus our own 2-year parts and labor warranty. Every job comes with a 100% satisfaction guarantee.
Who owns the company? The same family since 1985. Family- and veteran-owned: William served in the U.S. Navy. We were a finalist for the BBB 2026 Torch Award for Ethics.
Veterans, first responders, seniors and teachers: ask for 10% off.
What Mission Viejo Homeowners Should Know About Their Water
Your house is probably in the 35-to-55-year range
Mission Viejo grew one neighborhood at a time, starting with the Deane Homes in 1966. Census survey estimates put about 12,400 of the city's roughly 33,000 homes in the 1970s and 7,900 in the 1980s. If your home still has its original main shutoff valve, test it now: turn it off and back on. A valve that hasn't moved in decades can stick, and you want to find that out before a pipe breaks, not during.
Who to call: your water district or a plumber
Four districts serve Mission Viejo: El Toro, Moulton Niguel, Santa Margarita and Trabuco Canyon. Your bill shows which one is yours. Water running in the street or a main break? Call your district. Water at the meter box? Call the district too, and they'll tell you which side of the meter it's on. Moulton Niguel's 24-hour line for water or sewer emergencies is (949) 831-2500. Water leaking inside your house or yard, past the meter? That's a plumber.
Quick test: turn off every faucet and appliance, then look at your meter. If it's still moving, the leak is on your side.
Moulton Niguel customers can see their water use by the hour
Moulton Niguel replaced every customer's meter with a smart meter. You can check your hourly use online, and the district can notify you when it sees water running all night. If you get one of those notices, or see use at 3 a.m. when everyone's asleep, that's a leak worth finding.
Santa Margarita customers can get a rebate on a leak monitor
Santa Margarita Water District offers up to $100 back on qualifying flow-monitoring devices, which send leak alerts to your phone. Some clip onto the meter; others are plumbed into your water line and can shut the water off automatically. If your home has fire sprinklers, the district warns that a plumbed device must go on the household line after it splits from the sprinkler line, never before it. We install automatic water shutoff valves and can tell you where one belongs in your house. Check smwd.com/rebates before you buy, since the rebate only covers qualifying models.
Free Slab Leak Detection
When we do your slab leak repair or reroute.
To qualify, we must do the repair or the reroute. The leak detection and the repair must both be done during regular business hours. Not valid with any other offer.
Call now: (714) 964-3519Questions Mission Viejo Homeowners Ask
Why is my floor warm in one spot?
A warm spot on the floor can be a sign of a hot water line leaking under the slab. Check whether the spot stays warm when no hot water is running, and look at your water meter with everything off. If the meter moves, call us for leak detection.
How urgent is a slab leak?
Treat it as urgent. Water under the slab keeps running until the line is shut off, so turn off the main valve and call.
How long does slab leak repair take?
A spot repair usually takes 4 to 6 hours. Rerouting the line so it no longer runs through the slab takes a full day.
Can thermal imaging find a slab leak?
Sometimes, but it isn't reliable on its own. A copper line close to the concrete, or a recirculating hot water system that keeps the whole line warm, can make a spot look like a leak when it isn't. That's why we confirm with a pressure test and pinpoint the leak with acoustic listening equipment.
Does homeowners insurance cover a slab leak or a sewer line?
It depends on your policy. Call your insurance company before the repair starts and ask what it covers.
What kind of gas pipe can be buried?
For new underground lines we use polyethylene (PE) gas pipe, installed to code with tracer wire so the line can be found later. Where the plastic line meets steel, the steel ends are wrapped to protect them.
What size tankless water heater do I need?
It depends on how much hot water your home uses at once. Our tankless estimates are free: the plumber checks your gas line size and electrical outlet, works out how the unit will be vented, and sizes it to your home's hot water demand.
Will you install a faucet or fixture I already bought?
Yes. We install fixtures homeowners buy themselves, like faucets, and we bring new supply lines on the truck if the old ones should be replaced. Our 1-year warranty covers our workmanship on the installation; the parts you supply yourself aren't covered.
Can I call 911 for a plumbing problem?
Not for a leak or a clog. Shut off the main water valve and call us. If you smell gas, get everyone out, then from a safe spot call SoCalGas at 1-800-427-2200, or 911 if anyone is in danger.
Is a leak my problem or the water district's?
Turn everything off and check your meter. If it keeps moving, the leak is on your side, and that's ours to find. Water coming up in the street is the district's: call the number on your water bill.
Do you speak Spanish?
Yes, we have a Spanish-speaking technician. Ask when you call.
What to Do Now
If water is running, shut off the main valve first. Then call (714) 964-3519. Can it wait until tomorrow? Book online any time.
How a visit works
You call or book. If you book a scheduled visit, you get a two-hour arrival window. The plumber finds the problem, explains it, and gives you one written price for the whole job. Nothing starts until you say yes.
Have a question?
Not sure if it's an emergency, or whether that old water heater is worth fixing? Call us. An experienced member of our staff answers, day or night, and there's no charge for the conversation. If it's something you can fix yourself, I'll tell you.
William J. Horsky Jr.
Owner, Professional Plumbing, Inc.
About the author. William J. Horsky Jr. started Professional Plumbing, Inc. in 1985 and still owns it. He's a U.S. Navy veteran, and the company is licensed by the California Contractors State License Board, license 517514.
