Natural gas in Waldorf comes from Washington Gas, so if you smell gas, get everyone out of the house first and then call 911 and Washington Gas at 844-WASHGAS (844-927-4427), option 1, from outside. For leak repairs on your side of the meter, new appliance lines and gas water heater hookups, call the number on this page to be connected with a local plumber in Waldorf.

Who supplies gas in Waldorf, and who handles the pipe in my house?
The Maryland Office of People's Counsel lists Washington Gas as the gas company for Charles County, and no other gas utility is listed for the county. Washington Gas runs the mains, the service line and the meter. From the meter outlet onward, the piping that feeds your furnace, water heater, range and dryer belongs to the homeowner, and that is the part a plumber works on. Some homes along the US 301 and MD 5 corridors are all-electric, and outlying parcels may have no gas main at all, so check whether a gas bill actually arrives before planning a new gas appliance.
Does gas work in Waldorf need a permit, and from whom?
Waldorf sits in Charles County, outside the WSSC Water permit area that covers neighboring Prince George's County. Plumbing and gas permits come from Charles County Codes, Permits and Inspection Services in La Plata, part of the Department of Planning and Growth Management. The county's building code adopts the International Plumbing Code and the International Fuel Gas Code, which set pipe sizing, shutoff valve placement, venting and testing rules. A plumber doing a new branch line, a water heater change or a furnace swap will know which of those jobs needs a permit and inspection before the gas is turned back on.
Is the gas piping in a Waldorf house likely to be old?
Not usually. In ZIP 20603, most homes went up after 1980, with the biggest share built between 1980 and 1999, and Waldorf has grown many times over since then. That means the piping is often black iron or flexible stainless tubing in reasonable shape. The weak points tend to be elsewhere: unions and valves that have been disturbed during appliance swaps, flexible connectors behind ranges and dryers that have been bent one too many times, and branch lines that were extended for a fireplace or a second-floor laundry without anyone checking whether the main run could carry the added load.
A note before you call
Have the appliance details ready: what it is, its rated input if the label shows one, and where it sits relative to the meter. If the job is a new range or dryer, say whether a gas stub already exists. For anything outdoors, such as a grill line or a standby generator, Maryland's one-call system, Miss Utility, should mark buried lines before anyone digs. Any gas odor, though, comes first: leave the house and call from the yard.
Gas Line Services questions in Waldorf
What should I do the moment I smell gas indoors?
Does replacing a gas water heater or furnace need a permit?
Can gas be run outside to a grill, patio heater or generator?
Our home is all-electric. Is adding gas possible?
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