Gas Line Repair in Chicago, IL
Chicago is a mains gas town — 78% of households heat with utility gas. The useful thing to know before anything goes wrong is where the utility’s responsibility stops.
Read this first
The utility's regulated line ends at the meter outlet and the piping beyond it belongs to the property owner. That boundary decides most gas line questions in Chicago, where 78% of households heat with utility gas and a buried service line runs from the street on most properties.
Source: US Census Bureau, American Community Survey table B25040; the service line boundary is 49 CFR § 192.3.
If you smell gas right now
Leave the building on foot. Do not use a phone or a light switch inside. Call 911 and your gas utility from somewhere else, and do not call us — we are a referral service, not an emergency line. The full list, in order.
How Chicago is supplied
The meter is the boundary the federal rules draw: a service line terminates at the meter outlet, or at the connection to customer piping if that is further downstream. Everything past it is customer piping.
Ownership and maintenance responsibility follow tariff and state regulation rather than that definition, and they do not always land in the same place. Ask where your utility’s responsibility ends before you need to know.
| Households in Chicago | Share |
|---|---|
| Utility (mains) gas | 78% |
| Bottled or tank propane | 2% |
| Electricity | 18% |
| Fuel oil and kerosene | under 1% |
| Wood and everything else | 3% |
Source: US Census Bureau, American Community Survey 5-year estimates, table B25040 (house heating fuel), 2023 release. Universe: 1,140,118 occupied housing units. The table counts heating fuel rather than pipework. A house on mains gas almost certainly has a service line; the Census does not say so directly and neither do we. Service line definition: 49 CFR § 192.3, via PHMSA interpretation PI-12-0003.
Across Illinois as a whole, 82% of households are on mains gas and 2% on tank propane. Chicago sits 4 points below the state on mains and about level with it on propane. A state figure would flatten exactly that difference, which is the reason these pages are built town by town instead.
Before anyone digs on the property
One free call before any excavation. PHMSA is blunt about why: excavation damage is the leading cause of pipeline incidents, and 8-1-1 raises the odds of avoiding one to 99 in 100. It applies to a fence post as much as a foundation.
Source: PHMSA, 811 Day.
What to ask whoever quotes it
If any part of the job is in the ground, ask when they are calling 8-1-1 and whether a private line may be in the way. Both answers should come before the excavation, not during it.
Other Illinois towns we route in
- Park Ridge 86% mains gas · 1% tank propane
- Wheaton 87% mains gas · 1% tank propane
- Winnetka 85% mains gas · under 1% tank propane
- Northbrook 82% mains gas · 1% tank propane
- River Grove 87% mains gas · 4% tank propane
Checking a plumber in Illinois
Illinois licenses are issued by the Illinois Department of Public Health, Plumbing Program, which publishes a public search you can use before work begins.
Gas work is separately permitted and separately licensed in most jurisdictions, so ask specifically about gas rather than plumbing in general.
For repair work, not for a suspected leak.If you can smell gas, leave and call 911 or your utility from outside; this is the wrong number for that. For everything else — a line, a meter, an appliance connection — we will route you to a contractor covering your area, free of charge to you. Non-emergency work in Chicago goes through this number as well.
Call (888) 752-8038