Gas Line Safety for Maryland Homeowners: What You Need to Know

Signs of a Gas Leak

• Smell of rotten eggs or sulfur (mercaptan — the odorant added to natural gas)
• Hissing or whistling sound near gas lines or appliances
• Dead or dying vegetation in an otherwise healthy area of your yard
• Bubbling in standing water near gas lines
• Unexplained increase in your gas bill
• Physical symptoms: headache, dizziness, nausea when indoors

Maryland Gas Line Licensing Requirements

In Maryland, all gas line work — installation, repair, modification, and testing — must be performed by a licensed Master Plumber & Gas Fitter or a journeyman working under one. This is not a suggestion; it's state law. Unlicensed gas work is illegal, voids your homeowner's insurance, and can result in fines and required removal of the work.

Terry Foster holds Maryland Master Plumber & Gas Fitter License #98433 — one of the highest plumbing credentials in the state. All gas work performed by Deep Dive Plumbing Maryland is properly permitted, inspected, and pressure tested.

Common Gas Line Services

• New gas line installation: For new appliances, generators, or home additions
• Gas leak detection and repair: Pressure testing and leak location using professional equipment
• Appliance connection: Connecting gas ranges, dryers, fireplaces, and water heaters
• Gas line sizing: Ensuring adequate capacity for all appliances on the line
• Generator gas line: Dedicated line for standby generators — increasingly common in Southern Maryland
• Gas line pressure testing: Required after any modification — confirms no leaks before use

Annual Gas Line Inspection

We recommend an annual inspection of all gas appliances and visible gas lines — checking connections, flexible connectors, shutoff valves, and appliance operation. Flexible gas connectors (the corrugated metal lines connecting appliances to the gas supply) should be replaced every 10–15 years regardless of condition.