Gas Line Repair in Thornton, CO
73% of households in Thornton heat with utility gas, which means a buried service line runs from the street to a meter on most of these properties. Where that line ends is a federal definition, and it decides who repairs what.
Read this first
A buried service line and a meter sit on most properties in Thornton, where 73% of homes are on mains gas. Federal rules end the utility's service line at the meter outlet, so everything downstream of the meter is the owner's to maintain and repair.
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 Thornton is supplied
Two questions hide behind one. Where does the regulated line end — the federal answer is the meter outlet. And who pays for a repair on either side of that — which is tariff and state regulation, and varies.
The second one is the one that costs money, and it is answered by your utility rather than by any rule you can look up.
| Households in Thornton | Share |
|---|---|
| Utility (mains) gas | 73% |
| Bottled or tank propane | 1% |
| Electricity | 24% |
| Fuel oil and kerosene | 0% |
| Wood and everything else | 2% |
Source: US Census Bureau, American Community Survey 5-year estimates, table B25040 (house heating fuel), 2023 release. Universe: 12,237 occupied housing units. B25040 records what heats the house, which is the best available guide to whether a property has mains gas or a tank — it does not count service lines directly. Service line definition: 49 CFR § 192.3, via PHMSA interpretation PI-12-0003.
Across Colorado as a whole, 68% of households are on mains gas and 3% on tank propane. Thornton sits 5 points above the state on mains and 2 points below it on propane. The state number would tell you something true about the state and very little about here, which is why it is not the number above.
Before anyone digs on the property
Digging is the risk, not age or material. PHMSA names excavation damage as the leading cause of pipeline incidents and puts a caller’s chance of avoiding one at 99 percent. 8-1-1 is nationwide, toll-free, and costs nothing.
Source: PHMSA, 811 Day.
What to ask whoever quotes it
Ask which side of the meter the work is on before anything else. On the utility side it may not be a contractor job at all, and a quote that has not established that has not established whose problem it is.
Other Colorado towns we route in
- Cascade 81% mains gas · 4% tank propane
- Twin Lakes 24% mains gas · 44% tank propane
- Castle Rock 78% mains gas · 2% tank propane
- Nunn 54% mains gas · 40% tank propane
- Milliken 79% mains gas · 5% tank propane
Checking a plumber in Colorado
Colorado licenses are issued by the Colorado State Plumbing Board, Division of Professions and Occupations, 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. Other Thornton requests are covered by the same line.
Call (888) 752-8038