Backflow Testing in Costa Mesa, CA
Enforced by Costa Mesa Fire & Rescue, Fire Prevention / Community Risk Reduction Division
Costa Mesa enforces NFPA 10 with local amendments that go beyond the CA state code. These jurisdiction-specific changes to No Costa Mesa-specific amendments to CFC Section 906 or NFPA 10. CMFR enforces NFPA 10 as incorporated through the 2025 CFC without modification. directly affect backflow testing requirements for building owners and property managers in Costa Mesa.
Compliance Requirements
Annual Backflow Testing
Administrative citation $150-$500 under CMMC Section 1-35. City may suspend water service for non-compliance.
California Health and Safety Code Section 116800; CFC Section 901; NFPA 25 Section 13.2.5, Section 13.7.1; CMMC Title 7
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Code Adoptions
Local Amendments: No Costa Mesa-specific amendments to CFC Section 906 or NFPA 10. CMFR enforces NFPA 10 as incorporated through the 2025 CFC without modification.
Local Amendments: No direct CMFR amendments to NFPA 25 text. ITM reports submitted directly to CMFR Fire Prevention (no third-party online portal). CMFR water-flow test form required for available water supply documentation per CMMC Section 19.2.3.1.1.1.
Local Amendments: CMMC Section 901.11: false alarm fee schedule assessed after more than two false alarms per calendar year with 10% per month late fee. CMMC Section 510.1 (amended): ERCES required in all new buildings with exceptions for one-story buildings not exceeding 12,000 sq ft. FDC location amended at Section 912.2: within 150 feet of a public hydrant.
Local Amendments: No Costa Mesa-specific amendments to CFC Section 609 or NFPA 96. Hood suppression system permits required as part of Costa Mesa Building Division concurrent permit process. Tenant restaurant buildouts at South Coast Plaza require fire permit submission covering hood suppression systems.
Local Amendments: No direct amendments to NFPA 101 provisions. CFC Chapter 10 adopted without amendment. CFC Chapter 11 partially adopted retaining sprinkler and alarm upgrade sections. Board of Appeals for life safety disputes: City Planning Commission per CMMC Section 5-1.1(e).
Authority Having Jurisdiction
Costa Mesa Fire & Rescue, Fire Prevention / Community Risk Reduction Division
cityPhone(714) 754-5049
Licensed Providers
No listed providers found for this service in Costa Mesa.
Frequently Asked Questions
How often is backflow testing required in Costa Mesa?
Costa Mesa requires backflow testing once per year per California Health and Safety Code Section 116800; CFC Section 901; NFPA 25 Section 13.2.5, Section 13.7.1; CMMC Title 7. The deadline type is anniversary, with a deadline of 12 months from installation or last test.
Who is the AHJ for backflow testing in Costa Mesa?
The Authority Having Jurisdiction (AHJ) for backflow testing in Costa Mesa is the Costa Mesa Fire & Rescue, Fire Prevention / Community Risk Reduction Division. The AHJ reviews inspection reports, issues violations, and has final authority over code interpretation. Contact the fire marshal, Ryan Bohr, for questions.
What happens if I miss a backflow testing deadline in Costa Mesa?
Missing a backflow testing deadline in Costa Mesa can result in Administrative citation $150-$500 under CMMC Section 1-35. City may suspend water service for non-compliance. The penalty severity is classified as medium.
What edition of NFPA 10 does Costa Mesa enforce?
Costa Mesa enforces the 2022 edition of NFPA 10. This matches the current published edition. Adopted through 2025 CFC (Title 24, Part 9) Section 906 references NFPA 10, 2022 Edition via Chapter 80. CCR Title 19, Division 1, Chapter 3 (Sections 550-617) maintains California's parallel extinguisher regulatory framework requiring CSFM-licensed fire extinguisher concern..
Data current as of April 2026