Gas
Gas Line Safety: What Every Homeowner Should Know
Written by Jose Garcia, Responsible Master Plumber (RMP #44229), GarSan Plumbing Services.
Quick answer
Move everyone outdoors first then call 911 or the utility company. Stay outside until they arrive. Never use a phone inside or a flame to search for a leak.
Natural gas powers your home efficiently, but slight leaks create an explosion risk. You might notice the rotten egg smell added to gas or a hissing sound near appliances or buried piping. You could also see patches of dead plants over buried lines. Because gas is invisible and highly flammable, you must treat every suspicion as a potential emergency immediately. In Texas, these systems must be fixed or installed by a licensed plumber, with permits where required. This ensures the work meets strict code requirements where we serve northeast Houston.
Recognizing the smell of gas
Natural gas has no natural smell. Providers add a chemical called mercaptan to give it a distinct rotten egg odor so you can detect a leak. You might notice this sulfur-like scent near your stove, water heater, or furnace. The smell can also drift from underground pipes before you get close to the surface. If you notice this strong odor inside your home, assume there is a dangerous leak in that room and act immediately.
Other physical signs of leaks
Hissing sounds are a clear indicator of escaping high-pressure gas. You should watch for lines over a buried gas line. Look at the ground around your foundation for dead patches of vegetation. You might see bubbles forming in wet spots or soil that appears to be blistering. These physical signs show a pipe has ruptured and gas is escaping into the surrounding ground, which increases the risk of fire or explosion.
The immediate response protocol
Leave the building immediately. Do not flip any electrical switches or use your phone inside the house. Even a tiny spark can ignite the gas, especially if the room is full of fumes. Move all people and pets to a safe distance away from the structure. If you must use a phone, do it outside the house. Once you are clear, call GarSan Plumbing Services at 832 318-1140 for emergency assistance.
Want this looked at properly?
We are a licensed plumbing company led by a Responsible Master Plumber, based in New Caney and serving Kingwood, Humble and Northeast Houston. Call and describe the problem, and we will tell you honestly what it needs.
Why gas work requires a licensed professional
You never search for a gas leak with an open flame. Gas work falls under strict state regulations established by the TSBPE. Only an appropriately licensed plumber can perform these repairs to ensure the system is safe. GarSan works under Jose Garcia, Responsible Master Plumber, RMP #44229. Attempting this work yourself usually requires a permit and is a violation of state law.
Understanding the cost to repair
The price depends heavily on the pipe material and the length of the run. Repiping an older home usually runs in the range of several thousand dollars. A simple leak repair might cost significantly less, often in the range of a few hundred dollars per repair section. Always get a written estimate before work begins, and remember that pricing varies based on the specific scope of the gas line service.
Frequently asked questions
What does natural gas smell like?
Most utility companies add a chemical called mercaptan that smells like rotten eggs to help you detect leaks early.
Can I repair a gas pipe myself?
No. In Texas, gas line installation and repair must be done by an appropriately licensed plumber, with permits obtained where required.
Do you pull permits for gas work?
Yes. Where the job and jurisdiction require a permit, we obtain it and coordinate the inspection, including with the City of Houston.
How do I know if I have a buried leak?
Look for patches of dead vegetation over your lawn or a sound of escaping gas near the meter area.
Is it safe to turn the gas back on?
You must wait for the gas company or a licensed plumber to verify the leak is gone before restarting the flow.
Can you use Teflon tape on gas lines?
Not the standard white PTFE tape sold for water. Gas work uses a thicker tape rated for fuel gas, usually yellow, or a pipe joint compound rated for gas. Using the wrong one on a gas joint is a real leak risk, which is the whole reason gas work is licensed-only in Texas and is pressure tested, with a permit where required. If you are asking this question because you are about to join a gas line yourself, that is the answer to the larger question too.
Services mentioned in this guide
Emergency Plumbing
Burst pipes, no water, sewage backing up. You reach the GarSan team, not a national call center.
Water Heater Repair & Replacement
Tank and tankless. We tell you honestly whether it is a repair or a replacement, with permits pulled where required.
Gas Line Installation & Repair
Generator hookups, buried lines, risers and regulators. Licensed-only work, permits pulled where required, and pressure tested.