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Earlier editions: 20222019

Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS

418.3 Location of Floor Drains. Floor drains shall be

California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-09-10 · California

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

installed in the following areas: (1) Toilet rooms containing two or more water closets or a combination of one water closet and one urinal, except in a dwelling unit. (2) Commercial kitchens and in accordance with Section 704.3.

(3) Laundry rooms in commercial buildings and common laundry facilities in multi-family dwelling buildings. (4) Boiler rooms.

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▸Contents — California Plumbing Code (Title 24, Part 5)
California Plumbing Code (Title 24, Part 5)
  1. Chapter 1 — GENERAL CODE PROVISIONS
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — GENERAL REGULATIONS
  4. ▸Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
    Overview
    1. 401.1 Applicability. This chapter shall govern the materials
    2. 401.2 Quality of Fixtures. Plumbing fixtures shall be construc…
    3. 401.3 Water-Conserving Fixtures and Fittings.
    4. 402.1 Cleaning. Plumbing fixtures shall be installed in a
    5. 402.2 Joints. Where a fixture comes in contact with the wall
    6. 402.3 Securing Fixtures. Floor-outlet or floor-mounted
    7. 402.4 Wall-Hung Fixtures. Wall-hung fixtures shall be
    8. 402.5 Setting. Fixtures shall be set level and in proper align…
    9. 402.6 Flanged Fixture Connections. Fixture connections between…
    10. 402.7 Supply Fittings. The supply lines and fittings for
    11. 402.8 Installation. Fixtures shall be installed in accordance
    12. 402.9 Design and Installation of Plumbing Fixtures.
    13. 402.10 Slip Joint Connections. Fixtures having concealed slip …
    14. 402.11 Future Fixtures. Where provisions are made for the
    15. 403.1 General. Where accessible facilities are required in
    16. 403.2 Fixtures and Fixture Fittings for Persons with
    17. 403.3 Exposed Pipes and Surfaces. Water supply and
    18. 404.1 Waste Fittings. Waste fittings shall comply with
    19. 404.2 Overflows. Where a fixture is provided with an overflow,…
    20. 405.1 Prohibited Water Closets. Water closets having an
    21. 405.2 Prohibited Urinals. Trough urinals and urinals with
    22. 405.3 Miscellaneous Fixtures. Fixed wooden, or tile wash
    23. 406.1 Water and Waste Connections. Baptisteries, ornamental an…
    24. 406.2 Special Use Sinks. Restaurant kitchen and other
    25. 406.3 Special Use Fixtures. Special use fixtures shall be
    26. 406.4 Zinc Alloy Components. Zinc alloy components
    27. 407.1 Application. Lavatories shall comply with ASME
    28. 407.2 Water Consumption. The maximum water flow rate
    29. 407.3 Limitation of Hot Water Temperature for Public
    30. 407.4 Transient Public Lavatories. Self-closing or metering fa…
    31. 407.5 Waste Outlet. Lavatories shall have a waste outlet
    32. 407.6 Overflow. Where overflows are provided, they shall
    33. 408.1 Application. Manufactured shower receptors and
    34. 408.2 Tileable Shower Receptors. Tileable shower receptors and…
    35. 408.3 Water Consumption. Showerheads shall have a «
    36. 408.6 Finished Curb or Threshold. Where a shower
    37. 408.7 Shower Compartments. Shower compartments
    38. 408.8 Lining for Showers and Receptors. Shower
    39. 408.4 Individual Shower and Tub-Shower Combina-
    40. 408.5 Waste Outlet. Showers shall have a waste outlet and
    41. 408.9 Public Shower Floors. Floors of public shower
    42. 408.10 Location of Valves and Heads. Control valves
    43. 408.11 Water Supply Riser. A water supply riser from the
    44. 409.1 Application. Bathtubs shall comply with ASME
    45. 409.2 Waste Outlet. Bathtubs and whirlpool bathtubs shall
    46. 409.3 Overflow. Where overflows are provided, they shall
    47. 409.4 Limitation of Hot Water Temperature in Bath-
    48. 411.3 Water Closet Seats. Water closet seats shall be properly…
    49. 411.4 Personal Hygiene Devices. Water closets with
    50. 412.1 Application. Urinals shall comply with ASME
    51. 409.5 Backflow Protection. The water supply to a bathtub
    52. 409.6 Installation and Access. Bathtubs and whirlpool
    53. 410.1 Application. Bidets shall comply with ASME
    54. 410.2 Backflow Protection. The water supply to the bidet
    55. 410.3 Limitation of Water Temperature in Bidets. The
    56. 411.1 Application. Water closets shall comply with ASME
    57. 411.2 Water Consumption. The effective flush volume of
    58. 412.2 Backflow Protection. A water supply to a urinal
    59. 413.1 Where Required. Each water closet, urinal, clinical
    60. 413.2 Flushometer Valves. Flushometer valves and
    61. 413.3 Flush Tanks. Flush tanks for manual flushing shall
    62. 413.4 Water Supply for Flush Tanks. An adequate quantity of wa…
    63. 413.5 Overflows in Flush Tanks. Flush tanks shall be provided …
    64. 414.1 Application. Domestic dishwashing machines shall
    65. 414.2 Backflow Protection. The water supply connection
    66. 414.3 Drainage Connection. Domestic dishwashing
    67. 414.4 Lead Content. Dishwashing machines shall comply
    68. 415.1 Application. Drinking fountains shall be self-closing
    69. 415.2 Drinking Fountain Alternatives. Where food is
    70. 415.3 Drainage Connection. Drinking fountains shall be
    71. 415.4 Location. Drinking fountains shall not be installed in
    72. 416.1 Application. Emergency eyewash and shower equipment shal…
    73. 416.2 Water Supply. Emergency eyewash and shower
    74. 416.3 Installation. Emergency eyewash and shower equipment sha…
    75. 416.4 Location. Emergency eyewash and shower equipment shall b…
    76. 416.5 Drain. A drain shall not be required for emergency
    77. 417.1 Application. Faucets and fixture fittings shall comply
    78. 417.2 Deck Mounted Bath/Shower Valves. Deck
    79. 417.3 Handheld Showers. Handheld showers shall comply
    80. 417.4 Faucets and Fixture Fittings with Hose Con-
    81. 417.5 Separate Controls for Hot and Cold Water.
    82. 417.6 Low-Pressure Water Dispenser. Beverage faucets
    83. 417.7 Head Shampoo Sink Faucets. Head shampoo sink
    84. 417.8 Footbaths and Pedicure Baths. The water supplied to spec…
    85. 418.1 Application. Floor drains shall comply with ASME
    86. 418.2 Strainer. Floor drains shall be considered plumbing
    87. 418.3 Location of Floor Drains. Floor drains shall be
    88. 418.4 Food Storage Areas. Where drains are provided in
    89. 418.5 Floor Slope. Floors shall be sloped to floor drains.
    90. 419.1 Application. Food waste disposal units shall comply
    91. 419.2 Drainage Connection. Approved wye or other
    92. 419.3 Water Supply. A cold water supply shall be provided
    93. 420.1 Application. Sinks shall comply with ASME
    94. 420.2 Water Consumption. Sink faucets shall have a maximum flo…
    95. 420.3 Pre-Rinse Spray Valve. Commercial food service
    96. 420.4 Waste Outlet. Kitchen and laundry sinks shall have
    97. 421.1 Application. Floor sinks shall comply with ASME
    98. 421.2 Strainers. The waste outlet of a floor sink shall be
    99. 422.1 Fixture Count. Plumbing fixtures shall be provided
    100. 422.3 Fixture Requirements for Special Occupancies.
    101. 422.4 Toilet Facilities Serving Employees and Cus-
    102. 422.2 Separate Facilities. Separate toilet facilities shall
    103. 422.5 Toilet Facilities for Workers. Toilet facilities shall
    104. 422.6 Water Closet Compartment. Public water closets
    105. 422.7 Urinal Partitions. Each urinal shall be separated with
    106. 422.8 Cosmetology. [CA] Each school shall provide pub-
    107. 422.9 Cosmetology Establishments. [CA] Each estab-
    108. 422.10 Commissaries Serving Mobile Food Prepara-
    109. 422.11 Employee Lavatories in Food Establishments.
  5. Chapter 5 — WATER HEATERS
  6. Chapter 6 — WATER SUPPLY AND DISTRIBUTION
  7. Chapter 7 — SANITARY DRAINAGE
  8. Chapter 8 — INDIRECT WASTES
  9. Chapter 9 — VENTS
  10. Chapter 10 — TRAPS AND INTERCEPTORS
  11. Chapter 11 — STORM DRAINAGE
  12. Chapter 12 — FUEL GAS PIPING
  13. Chapter 13 — HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICA…
  14. Chapter 14 — FIRESTOP PROTECTION
  15. Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
  16. Chapter 16 — NONPOTABLE RAINWATER CATCHMENT SYSTEMS
  17. Chapter 17 — REFERENCED STANDARDS
  18. Appendix A — RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYS…
  19. Appendix B — EXPLANATORY NOTES ON COMBINATION WASTE AND VENT S…
  20. Appendix C — ALTERNATE PLUMBING SYSTEMS
  21. Appendix D — SIZING STORM WATER DRAINAGE SYSTEMS
  22. Appendix E — MANUFACTURED/MOBILE HOME PARKS AND RECREATIONAL V…
  23. Appendix F — FIREFIGHTER BREATHING AIR REPLENISHMENT SYSTEMS
  24. Appendix G — SIZING OF VENTING SYSTEMS
  25. Appendix H — PRIVATE SEWAGE DISPOSAL SYSTEMS
  26. Appendix I — INSTALLATION STANDARDS
  27. Appendix J — COMBINATION OF INDOOR AND OUTDOOR COMBUSTION AND …
  28. Appendix K — POTABLE RAINWATER CATCHMENT SYSTEMS
  29. Appendix L — SUSTAINABLE PRACTICES
  30. Appendix M — PEAK WATER DEMAND CALCULATOR
  31. Appendix N — IMPACT OF WATER TEMPERATURE ON THE POTENTIAL FOR …
  32. Appendix O — NON-SEWERED SANITATION SYSTEMS
  33. Appendix P — PROFESSIONAL QUALIFICATIONS
  34. Appendix Q — INDOOR HORTICULTURAL FACILITIES
  35. Appendix R — TINY HOUSES
  36. Appendix S — ONSITE STORMWATER TREATMENT SYSTEMS

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