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Chapter 31B — PUBLIC POOLS

Section 3138B — SPA POOL SPECIAL REQUIREMENTS

2025 California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-07-27 · California

Italicized text is a California amendment to the model code, as printed in the official publication.

3138B.1 Aeration system.

A spa pool aeration and/or jet system shall be completely separate from the recirculation system and shall not be interconnected with any other pool.

3138B.2 Maximum operating temperature.

The allowable water temperature of a spa pool shall not exceed 104° F (40° C).

3138B.3 Surface area.

The water surface area of a spa pool shall not exceed 250 square feet (23.23 m [2] ).

3138B.4 Maximum depth. The water depth in a spa pool shall not exceed 4 feet (1220 mm).

3138B.5 Emergency shut off switch.

A clearly labeled emergency shut off switch for the control of both the recirculation system and the aeration and/or jet system shall be installed adjacent to the spa pool.

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▸ Contents — 2025 California Building Code (Title 24, Part 2)
2025 California Building Code (Title 24, Part 2)
  1. Chapter 1 — ADMINISTRATION
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — OCCUPANCY CLASSIFICATION AND USE
  4. Chapter 4 — SPECIAL DETAILED REQUIREMENTS BASED ON OCCUPANCY A…
  5. Chapter 5 — GENERAL BUILDING HEIGHTS AND AREAS
  6. Chapter 6 — TYPES OF CONSTRUCTION
  7. Chapter 7 — FIRE AND SMOKE PROTECTION FEATURES
  8. Chapter 7A — MATERIALS AND CONSTRUCTION METHODS FOR EXTERIOR W…
  9. Chapter 8 — INTERIOR FINISHES
  10. Chapter 9 — FIRE PROTECTION AND LIFE SAFETY SYSTEMS
  11. Chapter 10 — MEANS OF EGRESS
  12. Chapter 11 — RESERVED
  13. Chapter 11A — HOUSING ACCESSIBILITY
  14. Chapter 11B — ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMM…
  15. Chapter 12 — INTERIOR ENVIRONMENT
  16. Chapter 13 — ENERGY EFFICIENCY
  17. Chapter 14 — EXTERIOR WALLS
  18. Chapter 15 — ROOF ASSEMBLIES AND ROOFTOP STRUCTURES
  19. Chapter 16 — STRUCTURAL DESIGN
  20. Chapter 16A — STRUCTURAL DESIGN
  21. Chapter 17 — SPECIAL INSPECTIONS AND TESTS
  22. Chapter 17A — SPECIAL INSPECTIONS AND TESTS
  23. Chapter 18 — SOILS AND FOUNDATIONS
  24. Chapter 18A — SOILS AND FOUNDATIONS
  25. Chapter 19 — CONCRETE
  26. Chapter 19A — CONCRETE
  27. Chapter 20 — ALUMINUM
  28. Chapter 21 — MASONRY
  29. Chapter 21A — MASONRY
  30. Chapter 22 — STEEL
  31. Chapter 22A — STEEL
  32. Chapter 23 — WOOD
  33. Chapter 24 — GLASS AND GLAZING
  34. Chapter 25 — GYPSUM PANEL PRODUCTS AND PLASTER
  35. Chapter 26 — PLASTIC
  36. Chapter 27 — ELECTRICAL
  37. Chapter 28 — MECHANICAL SYSTEMS
  38. Chapter 29 — PLUMBING SYSTEMS
  39. Chapter 30 — ELEVATORS AND CONVEYING SYSTEMS
  40. Chapter 31 — SPECIAL CONSTRUCTION
  41. Chapter 31A — SYSTEMS FOR WINDOW CLEANING OR EXTERIOR BUILDING…
  42. ▸ Chapter 31B — PUBLIC POOLS
    Overview
    1. Section 3101B — SCOPE
    2. Section 3102B — DEFINITIONS
    3. Section 3103B — PLAN REVIEW
    4. Section 3104B — CONSTRUCTION
    5. Section 3105B — PLAN COMPLIANCE INSPECTIONS
    6. Section 3106B — SPECIAL REQUIREMENTS FOR SPRAY GROUNDS
    7. Section 3107B — ALTERNATIVE EQUIPMENT, MATERIALS AND METHODS O…
    8. Section 3108B — POOL CONSTRUCTION
    9. Section 3109B — POOL GEOMETRY
    10. Section 3110B — PERMANENT MARKINGS
    11. Section 3111B — STEPS, RECESSED STEPS, LADDERS AND STAIRS
    12. Section 3112B — HANDHOLDS
    13. Section 3113B — DIVING BOARDS AND PLATFORMS
    14. Section 3114B — POOL DECKS
    15. Section 3115B — POOL LIGHTING
    16. Section 3116B — DRESSING, SHOWER AND TOILET FACILITIES
    17. Section 3117B — DRINKING FOUNTAINS
    18. Section 3118B — HOSE BIBBS
    19. Section 3119B — POOL ENCLOSURE
    20. Section 3120B — REQUIRED SIGNS
    21. Section 3121B — INDOOR POOL VENTILATION
    22. Section 3122B — POOL EQUIPMENT ENCLOSURE
    23. Section 3123B — GENERAL REQUIREMENTS
    24. Section 3124B — TURNOVER TIME
    25. Section 3125B — RECIRCULATION PIPING SYSTEM AND COMPONENTS
    26. Section 3126B — RECIRCULATION PUMP CAPACITY
    27. Section 3127B — WATER SUPPLY INLETS
    28. Section 3128B — FILTERS (ALL TYPES)
    29. Section 3129B — RAPID SAND PRESSURE FILTERS
    30. Section 3130B — DIATOMACEOUS EARTH FILTERS
    31. Section 3131B — HIGH-RATE SAND FILTERS
    32. Section 3132B — CARTRIDGE FILTERS
    33. Section 3133B — CHEMICAL FEEDERS
    34. Section 3134B — DISINFECTANT FEEDERS
    35. Section 3135B — GAS CHLORINATION EQUIPMENT ROOM
    36. Section 3136B — POOL SKIMMING SYSTEMS
    37. Section 3137B — POOL FITTINGS
    38. Section 3138B — SPA POOL SPECIAL REQUIREMENTS
    39. Section 3139B — SOLAR HEATING INSTALLATIONS
    40. Section 3140B — CLEANING SYSTEMS
    41. Section 3141B — WASTEWATER DISPOSAL
    42. Section 3142B — RESERVED
    43. Section 3143B — RESERVED
    44. Section 3144B — RESERVED
    45. Section 3145B — RESERVED
    46. Section 3146B — RESERVED
    47. Section 3147B — RESERVED
    48. Section 3148B — RESERVED
    49. Section 3149B — RESERVED
    50. Section 3150B — RESERVED
    51. Section 3151B — RESERVED
    52. Section 3152B — RESERVED
    53. Section 3153B — RESERVED
    54. Section 3154B — RESERVED
    55. Section 3155B — RESERVED
    56. Section 3156B — RESERVED
    57. Section 3157B — RESERVED
    58. Section 3158B — RESERVED
    59. Section 3159B — RESERVED
    60. Section 3160B — GROUND FAULT CIRCUIT INTERRUPTERS
    61. Section 3161B — WADING POOLS
    62. Section 3162B — ANTI-ENTRAPMENT DEVICES AND SYSTEMS
  43. Chapter 31C — RADIATION
  44. Chapter 31D — FOOD ESTABLISHMENTS
  45. Chapter 31F — MARINE OIL TERMINALS
  46. Chapter 32 — ENCROACHMENTS INTO THE PUBLIC RIGHT-OF-WAY
  47. Chapter 33 — SAFEGUARDS DURING CONSTRUCTION
  48. Chapter 34 — RESERVED
  49. Chapter 35 — REFERENCED STANDARDS
  50. Appendix A — EMPLOYEE QUALIFICATIONS
  51. Appendix B — BOARD OF APPEALS
  52. Appendix C — GROUP U—AGRICULTURAL BUILDINGS
  53. Appendix D — FIRE DISTRICTS
  54. Appendix E — RESERVED
  55. Appendix F — RODENTPROOFING
  56. Appendix G — FLOOD-RESISTANT CONSTRUCTION
  57. Appendix H — SIGNS
  58. Appendix I — PATIO COVERS
  59. Appendix J — GRADING
  60. Appendix K — GROUP R-3 AND GROUP R-3.1 OCCUPANCIES PROTECTED B…
  61. Appendix L — EARTHQUAKE RECORDING INSTRUMENTATION
  62. Appendix M — TSUNAMI-GENERATED FLOOD HAZARDS
  63. Appendix N — REPLICABLE BUILDINGS
  64. Appendix O — PERFORMANCE-BASED APPLICATION
  65. Appendix P — SLEEPING LOFTS
  66. Appendix Q — EMERGENCY HOUSING

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