Guide · Gas piping

Gas test pressure requirements by Colorado city

Updated Oct 17, 2026

The model fuel gas code (IFGC Section 406.4.1) sets the test at 1.5 times the highest working pressure, and never less than 3 psig, held for a minimum time. Many Colorado cities raise the pressure, the time or both. 31 of the 41 jurisdictions in CodeCheck Colorado change the gas test.

What does the fuel gas code require for a pressure test?

The model rule has two parts. The test pressure is 1.5 times the most the system will run at, with a floor of 3 psig. The test must then hold for a minimum time without losing pressure. The state fuel gas code is based on the 2024 IFGC.

Why do Colorado cities require a higher test?

A higher test finds small leaks the model minimum can miss. Many cities write their own test pressure and time into local amendments, often with a separate, higher test for welded pipe and for systems running above 14 inches of water column.

Which cities change the gas test?

31 jurisdictions in the app have a local gas test rule. Free samples already public on city pages are shown. The rest are in the app.

City or countyCodeLocal ruleAdopted by
Adams County2024 IFGCSign in to see Adams County’s test pressure and timeOrdinance No. 12
Arvada2024 IFGCFree sample Arvada: gas test pressure is at least 1.5 times working pressure and not under 10 psig (IFGC 406.4.1).Ord. No. 4921
Boulder2024 IFGCFree sample Boulder: gas test pressure is at least 1.5 times working pressure and not under 10 psig (IFGC 406.4.1).Ordinance No. 8684, Ordinance No. 8720
Brighton2021 IFGCSign in to see Brighton’s test pressure and timeOrd. No. 2485, Ord. No. 2498
Broomfield2024 IFGCFree sample Broomfield: gas test is at least 10 psi; welded pipe or gas over 14 in. w.c. tests at 60 psi or more (IFGC 406.4.1).Ordinance No. 2295
Castle Pines2021 IFGCSign in to see Castle Pines’s test pressure and timeOrd. No. 23-02
Castle Rock2024 IFGCSign in to see Castle Rock’s test pressure and timeOrd. No. 2026-017
Centennial2021 IFGCSign in to see Centennial’s test pressure and timeOrd. No. 2023-O-06
Cherry Hills Village2024 IFGCSign in to see Cherry Hills Village’s test pressure and timeOrd. 4, Ord. 6
Commerce City2021 IFGCSign in to see Commerce City’s test pressure and timeOrd. No. 2484, Ord. No. 2486
Denver2024 IFGCFree sample Denver: gas test at least 1.5 times working pressure and 10 psig; welded or over 14 in. w.c. piping, 60 psig (IFGC 406.4.1).Ord. No. 735-25, Ord. No. 1634-25
Douglas County2024 IFGCFree sample Douglas County: low-pressure gas piping tests at 10 psi for 15+ min with no drop; higher rules for welded pipe (IFGC 406.4.1).Board of County Commissioners resolution 'to Amend the Douglas County Building C
Eagle County2021 IFGCFree sample Eagle County: pressure test gas pipe with air, CO2 or nitrogen. Threaded pipe must hold at least 10 psi for at least 15 minutes. The model floor is 3 psig; Eagle County raises it to 10 psi for threaded pipe (IFGC 406.4.1).Eagle County Building Resolution
Englewood2024 IFGCSign in to see Englewood’s test pressure and timeOrd. No. 23-2026
Erie2021 IFGCSign in to see Erie’s test pressure and timeOrd. No. 20-2022, Ord. No. 46-2019
Federal Heights2018 IFGCSign in to see Federal Heights’s test pressure and timeOrd. 21-01, Ord. 20-25
Fort Collins2024 IFGCFree sample Fort Collins: raises the minimum gas piping test pressure to 10 psi (model: 3 psig) (IFGC 406.4.1).Ord. 218
Greeley2021 IFGCFree sample Greeley: raises the minimum gas piping test pressure to 10 psig (model: 3 psig) (IFGC 406.4.1).Ord. 25
Jefferson County2024 IFGCSign in to see Jefferson County’s test pressure and timeAdopted by Board of County Commissioners resolution
Lafayette2024 IFGCSign in to see Lafayette’s test pressure and timeOrd. No. 12, Ord. No. 2026-12
Lakewood2021 IFGCSign in to see Lakewood’s test pressure and timeOrd. O-2022-17, Ord. O-2023-16
Littleton2024 IFGCSign in to see Littleton’s test pressure and timeOrd. No. 11
Lone Tree2021 IFGCSign in to see Lone Tree’s test pressure and timeOrd. 22-07
Milliken2024 IFGCSign in to see Milliken’s test pressure and timeOrdinance No. 2025-834
Northglenn2024 IFGCSign in to see Northglenn’s test pressure and timeCB-2039
Parker2024 IFGCFree sample Parker: low-pressure gas tests at 20 psi for 30 min; 14 in. w.c. or more at 60 psi for 1 hour (IFGC 406.4.1).Ord. No. 4.95.6, Ord. No. 4.97.6
Sheridan2021 IFGCSign in to see Sheridan’s test pressure and timeOrd. No. 4-2022
Superior2024 IFGCSign in to see Superior’s test pressure and timeOrd. O-9
Thornton2024 IFGCSign in to see Thornton’s test pressure and timeOrd. No. 3731
Westminster2021 IFGCSign in to see Westminster’s test pressure and timeOrd. No. 4241, Ord. No. 3908
Wheat Ridge2024 IFGCSign in to see Wheat Ridge’s test pressure and timeOrd. No. 1833

What about welded pipe and 2 psi systems?

The model code uses the same formula for every system. Several Colorado cities set a separate, higher test for welded pipe, larger pipe or elevated-pressure systems. Those numbers are in the app for each city.

My gauge dropped. Did I fail?

The test has to hold without losing pressure. If it drops, find the leak, repair it and run the test again.