Denver Plumbing & Fuel Gas Code Amendments

City and county · Denver County · Colorado

Plumbing code: 2024 IPC
Fuel gas code: 2024 IFGC
Effective: Dec 31, 2025
Adopted by: Ord. No. 735-25, Ord. No. 1634-25
Local amendments: 60

Denver doesn't use the model plumbing and gas codes exactly as printed. It adopted the 2024 IPC and 2024 IFGC and then made 60 local changes. Some are paperwork, like permits and fees. Others change what you build in the field, including building sewer depth, water service line depth, gas pressure test. If you bid off the model book alone, you can miss them. CodeCheck Colorado lists every one in plain English with the official source.

What is Denver's building sewer depth requirement?

1 local change on this topic

Denver sets its own rule for building sewer depth. Sign in to see the rule and ordinance.

Compare sewer depth across Colorado cities →

How deep does a water service line have to be in Denver?

1 local change on this topic

Denver sets its own rule for water service line depth. Sign in to see the rule and ordinance.

Compare water line depth across Colorado cities →

What is Denver's gas pressure test requirement?

2 local changes on this topic · Free 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).

1 more Denver rule on this topic in the app. Sign in or start a free trial.

Compare gas test pressure across Colorado cities →

What does Denver change about gas piping?

4 local changes on this topic

Denver sets its own rule for gas piping. Sign in to see the rule and ordinance.

What are Denver's local venting rules?

3 local changes on this topic

Denver sets its own rule for venting. Sign in to see the rule and ordinance.

What are Denver's backflow prevention rules?

2 local changes on this topic

Denver sets its own rule for backflow prevention. Sign in to see the rule and ordinance.

What does Denver require for water heaters?

2 local changes on this topic

Denver sets its own rule for water heaters. Sign in to see the rule and ordinance.

Water heater permit rules in Colorado →

How does Denver handle plumbing tests and inspections?

1 local change on this topic

Denver sets its own rule for plumbing tests and inspections. Sign in to see the rule and ordinance.

Does Denver change any fixture requirements?

4 local changes on this topic

Denver sets its own rule for fixtures. Sign in to see the rule and ordinance.

What is Denver's rule on graywater systems?

2 local changes on this topic

Denver sets its own rule for graywater. Sign in to see the rule and ordinance.

What permit and fee rules does Denver add?

6 local changes on this topic

Denver sets its own rule for permits and administration. Sign in to see the rule and ordinance.