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Centennial, CO Building Safety: Plumbing Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Adopted code
2021 International Plumbing Code
Governing section
City Code § 18-5-10
Local amendment
12-inch minimum sewer depth
Penalty
Civil infraction, capped fine

Summary

Centennial adopts the 2021 International Plumbing Code as its Plumbing Code; any plumbing work must meet IPC standards, including a local amendment setting minimum sewer depth at 12 inches.

The International Plumbing Code, 2021 Edition as published by the International Code Council, 4051 Flossmoor Road, Country Club Hills, IL 60478, Chapters 1 through 13 inclusive, ("IPC"), is hereby adopted by reference as the City of Centennial Plumbing Code as if fully set out in this Article with the additions, deletions, insertions and changes as set forth in this Article.(b)No building shall be hereafter constructed, erected, enlarged, altered, or moved into the City unless the same shall, as to design, construction, quality of materials and workmanship, conform with the IPC, as adopted and as amended. (Ord. 2015-O-15 §2; Ord. No. 2023-O-06, §9)

Full Breakdown

Section 18-5-10 adopts the International Plumbing Code, 2021 Edition, Chapters 1 through 13, as the City of Centennial Plumbing Code. No building may be constructed, altered, or moved into the City unless its plumbing design, materials, and workmanship conform to the IPC as locally amended. Section 18-5-30 amends IPC Section 305.4.1 to set minimum sewer depth at 12 inches. Violators face a civil infraction and penalty under Section 1-4-10(b).

Violations & Fines

Civil infraction for constructing, altering, or maintaining any plumbing work that violates the IPC; penalty capped at the maximum civil fine under Section 1-4-10(b).

Frequently Asked Questions

What plumbing code does Centennial use?
The 2021 International Plumbing Code, adopted by reference as the City of Centennial Plumbing Code under Section 18-5-10, with local amendments.
Do I need to follow a specific sewer depth rule in Centennial?
Yes: a local amendment to IPC Section 305.4.1 sets the minimum sewer depth at 12 inches.

Sources & Official References

Other rules in Centennial

All Centennial rules

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