Irvine, CA Building Safety: Plumbing Permits (2026)
Key Facts
- Adopted code
- California Plumbing Code, 2025 ed., based on 2024 UPC
- Adopting section
- Irvine Municipal Code § 5-9-101(5)
- Permit trigger
- CBC § 105.1.3, added by § 5-9-205(A)
- Local amendment
- saline-waste discharge ban, § 5-9-405(A)
- Enforcing water agency
- Irvine Ranch Water District
- Effective
- November 12, 2025 (Ord. No. 25-26)
Summary
Irvine enforces plumbing work under the 2025 California Plumbing Code, based on the 2024 Uniform Plumbing Code, adopted by Municipal Code Section 5-9-101. Permits are required for covered installations, and the City bans discharging saline waste from water softeners into the Irvine Ranch Water District's system without state authorization.
5.California Plumbing Code, 2025 edition with errata (Title 24, Part 5, California Code of Regulations), including Appendices A, B, D, G, H, and I, based on the 2024 Uniform Plumbing Code, as published by the International Association of Plumbing and Mechanical Officials. ... 602.5 Saline waste. Except where permitted by State law, it shall be unlawful to install or replace any plumbing equipment, including any automatic or self-regenerating water softener unit, the operation of which may result in the discharge of saline waste into the facilities of the Irvine Ranch Water District, or the discharge of such wastes that might pollute any surface or underground stream, watercourse, lake or any body of water.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 20 | Zoning: Supplement 16).
Full Breakdown
including Appendices A, B, D, G, H, and I, based on the 2024 Uniform Plumbing Code, as published by the International Association of Plumbing and Mechanical Officials,' under Ordinance No. 25-26 (Exhibit A), effective November 12, 2025. 2's exemption list, amended by Section 5-9-205(B), narrows one common plumbing exemption: clearing stoppages or repairing leaks is exempt only if the work does not involve replacing or rearranging valves, pipes, or fixtures. Fees for plumbing permits and plan review are set by City Council resolution under Section 5-9-208, alongside building, electrical, and mechanical fees.
5, making it unlawful to install or replace equipment, including automatic or self-regenerating water softeners, whose operation discharges saline waste into the Irvine Ranch Water District's facilities or pollutes surface or groundwater, except where state law permits it. Section 5-9-405(B) and (C) further restrict pipe materials, prohibiting galvanized iron or steel underground and requiring approved polyethylene or non-metallic pipe for exterior underground piping repairs and extensions.
Violations & Fines
Plumbing violations fall under the same Building Code enforcement scheme as electrical work. Section 5-9-213 makes unpermitted or non-compliant plumbing installation a misdemeanor, with each day of a continuing violation a separate offense subject to fine or imprisonment, plus recovery of the City's investigation and attorneys' fees under Section 114.5.
Frequently Asked Questions
Which plumbing code applies in Irvine?
Do I need a permit to fix a leaking pipe in Irvine?
Can I install a water softener that discharges saline waste in Irvine?
Sources & Official References
Other rules in Irvine
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How other cities in Orange County handle plumbing permits.