Gas Leak Detection in Ontario, CA
Licensed 24/7 gas line detection, repair, and seismic valve installation across every Ontario neighborhood
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Gas Leak Detection & Repair in Ontario
Ontario's mix of older homes (1950s–1980s) and newer Ontario Ranch developments creates a wide range of gas line conditions. Many of the city's aging gas lines — particularly in central Ontario, the Colony, and Cucamonga-Guasti — were never brought up to current code, while neighborhoods near Ontario Mills and the airport corridor have variable infrastructure. Regal Plumbing & Rooter, a licensed family-owned plumbing company based at 2141 E Philadelphia St, Suite R in Ontario, CA (CA License #1097482), uses electronic combustible gas detectors to pinpoint leaks in 30–90 minutes. Gas leaks are emergencies — we use the same advanced detection equipment we rely on for slab leaks. Serving all of Ontario 24/7.
- ✓Electronic combustible gas detection (30-90 min)
- ✓Gas line repair and re-piping for older Ontario homes
- ✓Seismic shut-off valve installation (CA SB 1445)
- ✓Pressure testing after every repair
- ✓BBQ, pool heater, dryer & stove gas line installation
- ✓24/7 emergency response from our Ontario HQ
What We Cover
Services We Provide
Leak Location
Electronic gas detectors pinpoint the exact leak in your Ontario home's piping — no demolition guesswork.
Line Repair & Repiping
We repair or replace damaged sections in older Ontario gas lines and bring them up to current code.
Pressure Testing
Every repair is verified with a full pressure test before gas service is restored to your Ontario home.
Our Promise
Why Choose Regal?
Honest Pricing
Upfront, transparent quotes before any work begins. No hidden fees, no surprises — even in emergencies.
Fast Response
24/7 availability for emergencies. We arrive quickly and work efficiently to minimize damage.
Quality Workmanship
Every job backed by our commitment to premium craftsmanship and lasting results.
Explore
Other Services We Offer
Emergency Plumbing
Rapid-response emergency plumbing for Ontario, CA and surrounding cities - we’re on call around the clock.
Learn More →Drain Cleaning
Professional clearing of kitchen, bathroom, and main sewer line blockages.
Learn More →Sewer Line Repair
Camera inspection, trenchless repair, and full sewer line replacement.
Learn More →Water Heater Services
Installation and repair of tank, tankless, and heat pump water heaters.
Learn More →Slab Leak Detection
Electronic leak detection beneath concrete slabs with minimal disruption.
Learn More →Hydrojetting
High-pressure water jetting to scour pipe walls and restore full flow.
Learn More →Water Filtration
Whole-home softeners, reverse osmosis, and filtration systems installed.
Learn More →Pipe Repair
Expert pipe repair and replacement for copper, PVC, and galvanized systems.
Learn More →Commercial Plumbing
Full-service commercial plumbing for restaurants, apartments, HOAs, and businesses across Ontario & the Pomona Valley.
Learn More →Service Coverage
Cities We Serve
We provide fast, local plumbing service throughout the Inland Empire.
Quick Answer
If you smell gas in Ontario, CA, leave the building immediately, call 911 from outside, then SoCalGas at 1-800-427-2200. Regal Plumbing & Rooter provides 24/7 licensed gas leak detection in Ontario using electronic combustible gas detectors. Minor repairs typically cost $200–$600 and seismic valve installation runs $300–$800. Call (909) 600-4561.
Emergency Protocol
What To Do If You Smell Gas in Ontario
Leave Immediately
Do NOT touch lights, appliances, or electronics. Get everyone out of your Ontario home and move at least 100 feet away.
Call 911 + SoCalGas
Call 911 first, then SoCalGas at 1-800-427-2200 from outside the building. They will secure the area and shut off gas at the meter.
Call Regal Plumbing
Once safe, call us at (909) 600-4561. We respond 24/7 from our Ontario HQ to locate, repair, and pressure test before restoring gas.
Gas Line Services
Gas Line Services for Ontario Homeowners
Seismic shut-off valves are essential in Ontario. The city sits near the Chino Fault and is influenced by the broader San Andreas system. California SB 1445 requires seismic valves on new construction and certain permitted work, and they automatically trip at roughly a 5.4 magnitude shake. We strongly recommend retrofitting older Colony, central Ontario, and Cucamonga-Guasti homes where original 1950s–1980s gas lines remain in service.
New gas line installations are one of our most common Ontario jobs. Whether you're adding a BBQ, fire pit, pool heater, patio heater, gas dryer, or upgrading to a gas stove in Ontario Ranch, we route the line, make connections, pressure test, and pull City of Ontario permits.
Gas leaks are emergencies and we treat them that way. Our Ontario-based team uses the same precision detection technology we rely on for slab leak detection.
KNOW THE SIGNS
Warning Signs of a Gas Leak in Your Ontario Home
The most recognized warning sign is the rotten egg or sulfur odor SoCalGas adds to natural gas. A hissing or whistling sound near gas lines, meters, or appliances often signals a pressurized leak. Outside, dead or dying vegetation near a buried line can indicate an underground leak displacing oxygen in the soil — common in older Ontario yards with original service runs.
Pay attention to your body, too. Dizziness, nausea, or persistent headaches indoors can mean low-level gas exposure. An unexplained spike in your gas bill often reveals a slow leak. And visible corrosion on gas line connections is a red flag in older Ontario homes. Professional gas leak detection in Ontario, CA is one phone call away.
EMERGENCY ACTION
What To Do If You Smell Gas in Ontario — Emergency Steps
The moment you detect gas in your Ontario home, your first instinct might be to flip a light or grab your phone — don't. Any electrical spark can ignite accumulated gas. Do not turn switches on or off, do not light a match, and do not start a vehicle in an attached garage. Leave everything exactly as it is.
Evacuate immediately. Get every person and pet out, leaving doors open to ventilate. Move at least 100 feet from the structure. Call 911 from a cell phone or a neighbor's, then SoCalGas at 1-800-427-2200. After they have secured the area, call Regal Plumbing at (909) 600-4561. Our 24/7 emergency team dispatches from our Ontario shop on Philadelphia Street, often arriving in minutes.
OUR PROCESS
Our Gas Leak Detection Process in Ontario
Every Ontario gas call starts with an initial safety assessment. Our technician evaluates the area for hazards, checks ventilation, and confirms it is safe to proceed. If conditions are unsafe, we coordinate with SoCalGas before entering.
Next we use electronic combustible gas detectors to sweep every line, fitting, valve, and appliance connection. These instruments find concentrations far below what the human nose can sense — critical in older Ontario homes where slow leaks may have been present for months. Once we identify elevated readings, we pinpoint the exact leak location with no unnecessary demolition.
After repair, we run a full pressure test on the entire gas system, monitoring for any drop before service is restored. Most Ontario detection visits take 30 to 90 minutes.
SERVICE AREA
Gas Leak Detection Across Ontario
We respond to gas calls 24/7 across every Ontario neighborhood — the Colony, Cucamonga-Guasti, central Ontario, Ontario Ranch, and the airport/Ontario Mills corridor. Because our headquarters is right here in Ontario, our response times are some of the fastest in the area.
We also serve neighboring Rancho Cucamonga, Chino, Upland, and Pomona. From seismic valve installation to full gas line replacement, we bring the same licensed safety-first approach to every job. Contact us or call (909) 600-4561.
Common Questions
Ontario Gas Leak Detection FAQs
Ask about our current specials when you call.
Smell Gas in Ontario? Call Now
Evacuate, call 911, then call us. 24/7 licensed gas leak detection from our Ontario headquarters.
(909) 600-4561Call Now