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Gas Line Repair in San Dimas, CA
In San Dimas, 77% of homes are on mains gas. Every one of them has a service line under the ground between the street and the meter, and part of it belongs to somebody else.
Read this first
Responsibility changes hands at the meter outlet. The line under the ground between the street and the meter is the utility's up to that point, and the yard line and house piping after it are the property owner's. 77% of homes in San Dimas heat with utility gas.
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 San Dimas is supplied
Everything upstream of the meter outlet is the operator’s service line under 49 CFR § 192.3. Everything after it is customer piping under local code. That single point is what a contractor establishes before quoting.
It is also why the answer to "is this my problem" is sometimes no, and why it is worth asking before assuming it is yes.
| Households in San Dimas | Share |
|---|---|
| Utility (mains) gas | 77% |
| Bottled or tank propane | 2% |
| Electricity | 20% |
| Fuel oil and kerosene | under 1% |
| Wood and everything else | 1% |
Source: US Census Bureau, American Community Survey 5-year estimates, table B25040 (house heating fuel), 2023 release. Universe: 12,178 occupied housing units. B25040 is a fuel count, not an infrastructure count. It tells you what burns in these houses, from which the arrangement follows — but it is an inference, not a meter reading. Service line definition: 49 CFR § 192.3, via PHMSA interpretation PI-12-0003.
Across California as a whole, 65% of households are on mains gas and 2% on tank propane. San Dimas sits 12 points above the state on mains and about level with 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
PHMSA describes excavation damage as the leading cause of pipeline incidents, and puts the effect of one free phone call plainly: someone who calls 8-1-1 before they dig has a 99 percent chance of avoiding an incident, injury, harm to the environment and even death.
Source: PHMSA, 811 Day.
What to ask whoever quotes it
Ask what they will do about the existing load. Adding an appliance changes what the existing pipe has to deliver, and sizing is a calculation against the whole system rather than the new run alone.
Other California towns we route in
- Millbrae 67% mains gas · 1% tank propane
- Altadena 78% mains gas · under 1% tank propane
- Pleasant Hill 62% mains gas · 2% tank propane
- Beverly Hills 62% mains gas · 2% tank propane
- Hemet 77% mains gas · 3% tank propane
Checking a plumber in California
California licenses are issued by the Contractors State License Board, which publishes a public search you can use before work begins. California licenses the C-36 plumbing contractor; there is no state journeyman license.
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. Gas is one part of what San Dimas calls us about.
Call (888) 752-8038