Peoria, AZ Building Safety: Plumbing Permits (2026)
Key Facts
- Adopted code
- 2018 International Plumbing Code (ICC)
- Governing section
- City Code § 18-44
- Sewer burial depth
- 12 inches minimum below grade
- Small-occupancy restroom exception
- Business ≤50, mercantile ≤100 occupants
- Unpermitted work penalty
- Double permit fee plus investigation fee
Summary
Peoria enforces plumbing work under the 2018 International Plumbing Code, adopted and locally amended by City Code Section 18-44. City amendments set a 12-inch minimum burial depth for building sewers, exempt small occupancies from separate-sex restrooms, and route unpermitted plumbing work into the same doubled-fee penalty as the rest of the Building Code.
A certain document, one copy of which is on file in the City Clerk's Office of the City of Peoria, being marked and designated as "International Plumbing Code, 2018 Edition," published by the International Code Council, Inc., is hereby adopted, as amended herein, as the Plumbing Code of the City of Peoria.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-9: Supplement contains: LLocal legislation current through Ord. 2026-15, passed 6-16-26).
Full Breakdown
City Code Section 18-44(A) adopts the 2018 International Plumbing Code, published by the International Code Council, as the Plumbing Code of the City of Peoria, with detached one- and two-family dwellings and townhouses up to three stories referred instead to the International Residential Code. Section 18-44(B) amends the plumbing code chapter by chapter. Chapter 3's amended Section 305.4.1 requires building sewers connecting to a private sewage disposal system to sit 'not less than 12 inches (305 mm) below finished grade at the point of septic tank connection,' with all other building sewers held to the same 12-inch minimum below grade.
Chapter 4's amended Section 403.2 excuses several occupancies from providing separate restroom facilities for each sex: dwelling and sleeping units never need them, and buildings or tenant spaces need not provide them where the combined employee-and-customer occupant load is 15 or fewer, where a mercantile occupancy's load is 100 or fewer, or where a business occupancy's load is 50 or fewer; Section 410.2 drops the drinking-fountain requirement for occupant loads of 50 or fewer. Chapter 7's amended Section 704.1 sets minimum slopes for horizontal drainage piping under Table 704.1, with steeper slopes required upstream of a grease interceptor.
As with electrical and mechanical work, plumbing permits are enforced through City Code Section 18-21's Section 114: performing plumbing work without a posted permit is unlawful under Section 114.1.4, and Section 114.4.1 adds an investigation fee plus a doubled permit fee under Fee Table 27-6 for anyone who starts plumbing work before the permit issues.
Violations & Fines
Starting plumbing work, including sewer, drain, or fixture installation, before the City posts a permit violates Section 18-21's Section 114.1.4, and Section 114.4.1 charges an investigation fee plus a permit fee doubled under Fee Table 27-6. Installing a building sewer shallower than the 12-inch minimum under amended Section 305.4.1, or ignoring the Table 704.1 drainage slopes, is a Plumbing Code violation subject to the Building Official's correction order.
Frequently Asked Questions
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Do small businesses need separate men's and women's restrooms?
Sources & Official References
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