Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
422.4 Toilet Facilities Serving Employees and Cus-
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.
tomers. [Not adopted for OSHPD 1, 2, 3, 4 & 5] Each building or structure shall be provided with toilet facilities for employees and customers. Requirements for customers and employees shall be permitted to be met with a single set of restrooms accessible to both groups. Required toilet facilities for employees and customers located in shopping malls or centers shall be permitted to be met by providing a centrally located toilet facility accessible to several stores. The maximum travel distance from entry to any store to the toilet facility shall not exceed 300 feet (91 440 mm). Required toilet facilities for employees and customers in other than shopping malls or centers shall have a maximum travel distance not to exceed 500 feet (152 m).
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pancy classification shall be determined in accordance with the California Building Code . Occupancy classification not shown in Table 422.1 shall be considered separately by the Authority Having Jurisdiction.
[OSHPD 1, 2, 3, 4 & 5] Plumbing fixtures shall be provided in the minimum number shown in Table 4-2.
Exception: [BSC & DSA-SS] Using occupancy classifica- tion, described as function of space, determine occupant load factor from Table 4-1 Occupant Load Factor, of this chapter.
422.1.1 Fixture Calculations. The minimum number of fixtures shall be calculated at 50 percent male and 50 percent female based on the total occupant load. Where information submitted indicates a difference in the distribution
of the sexes such information shall be used to determine the number of fixtures for each sex. Once the occupancy load and occupancy are determined, Table 422.1 shall be applied to determine the minimum number of plumbing fixtures required. Where applying the fixture ratios in Table 422.1 results in fractional numbers, such numbers shall be rounded to the next whole number. For multiple occupancies, fractional numbers shall be first summed and then rounded to the next whole number. For toilet facilities designed for use by all genders, the minimum number of fixtures shall be the aggregate calculated at 50 percent female and 50 percent male in accordance with Table 422.1. Where all-gender fixtures are provided in addition to separate men’s and women’s facilities, those fixtures shall be included in determining the number of fixtures provided in an occupancy. [BSC & DSA-SS] The substitution of a water closet for each urinal shall be permitted provided the total number of fixtures installed complies with Table 422.1. 422.1.2 Single Use, Family or Assisted-Use Toilet, and Bathing Facilities. Where single use, family or assisted-use toilet, and bathing rooms are required, in applicable building regulations, the facilities shall be installed in accordance with those regulations. Fixtures located in single use, family or assisted-use, and bathing room facilities shall contribute to the total number of required fixtures in accordance with Section 422.1.
ilet,** and Bathing Facilities. Where single use, family or assisted-use toilet, and bathing rooms are required, in applicable building regulations, the facilities shall be installed in accordance with those regulations. Fixtures located in single use, family or assisted-use, and bathing room facilities shall contribute to the total number of required fixtures in accordance with Section 422.1.
422.1.3 [DSA-AC] Effective January 1, 1990, in new construction and those existing facilities which occu- pancy type are listed in Tables 422.1 and 4-4 for public use, which apply for permit to undertake construction, structural alterations, repairs or improvement which exceed 50 percent of the square footage of the entire facility, shall install water closets, urinals, lavatories and drinking fountains as stipulated in Tables 422.1 and 4-4 for public use. Community and/or municipal parks with a bleacher capacity not exceeding 500 seats shall be exempt from the requirements of this section and Tables 422.1 and 4-4. Each bathroom shall comply with Part 2, Chapter 11A and 11B of the California Building Code.
422.1.4 [OSHPD 1, 2, 3, 4 & 5] OSHPD facilities shall also comply with requirements of the California Building Code, Sections 1224, 1225, 1226, 1227 and 1228.
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Ask AI about this code▸Contents — California Plumbing Code (Title 24, Part 5)
- Chapter 1 — GENERAL CODE PROVISIONS
- Chapter 2 — DEFINITIONS
- Chapter 3 — GENERAL REGULATIONS
▸Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
Overview- 401.1 Applicability. This chapter shall govern the materials
- 401.2 Quality of Fixtures. Plumbing fixtures shall be construc…
- 401.3 Water-Conserving Fixtures and Fittings.
- 402.1 Cleaning. Plumbing fixtures shall be installed in a
- 402.2 Joints. Where a fixture comes in contact with the wall
- 402.3 Securing Fixtures. Floor-outlet or floor-mounted
- 402.4 Wall-Hung Fixtures. Wall-hung fixtures shall be
- 402.5 Setting. Fixtures shall be set level and in proper align…
- 402.6 Flanged Fixture Connections. Fixture connections between…
- 402.7 Supply Fittings. The supply lines and fittings for
- 402.8 Installation. Fixtures shall be installed in accordance
- 402.9 Design and Installation of Plumbing Fixtures.
- 402.10 Slip Joint Connections. Fixtures having concealed slip …
- 402.11 Future Fixtures. Where provisions are made for the
- 403.1 General. Where accessible facilities are required in
- 403.2 Fixtures and Fixture Fittings for Persons with
- 403.3 Exposed Pipes and Surfaces. Water supply and
- 404.1 Waste Fittings. Waste fittings shall comply with
- 404.2 Overflows. Where a fixture is provided with an overflow,…
- 405.1 Prohibited Water Closets. Water closets having an
- 405.2 Prohibited Urinals. Trough urinals and urinals with
- 405.3 Miscellaneous Fixtures. Fixed wooden, or tile wash
- 406.1 Water and Waste Connections. Baptisteries, ornamental an…
- 406.2 Special Use Sinks. Restaurant kitchen and other
- 406.3 Special Use Fixtures. Special use fixtures shall be
- 406.4 Zinc Alloy Components. Zinc alloy components
- 407.1 Application. Lavatories shall comply with ASME
- 407.2 Water Consumption. The maximum water flow rate
- 407.3 Limitation of Hot Water Temperature for Public
- 407.4 Transient Public Lavatories. Self-closing or metering fa…
- 407.5 Waste Outlet. Lavatories shall have a waste outlet
- 407.6 Overflow. Where overflows are provided, they shall
- 408.1 Application. Manufactured shower receptors and
- 408.2 Tileable Shower Receptors. Tileable shower receptors and…
- 408.3 Water Consumption. Showerheads shall have a «
- 408.6 Finished Curb or Threshold. Where a shower
- 408.7 Shower Compartments. Shower compartments
- 408.8 Lining for Showers and Receptors. Shower
- 408.4 Individual Shower and Tub-Shower Combina-
- 408.5 Waste Outlet. Showers shall have a waste outlet and
- 408.9 Public Shower Floors. Floors of public shower
- 408.10 Location of Valves and Heads. Control valves
- 408.11 Water Supply Riser. A water supply riser from the
- 409.1 Application. Bathtubs shall comply with ASME
- 409.2 Waste Outlet. Bathtubs and whirlpool bathtubs shall
- 409.3 Overflow. Where overflows are provided, they shall
- 409.4 Limitation of Hot Water Temperature in Bath-
- 411.3 Water Closet Seats. Water closet seats shall be properly…
- 411.4 Personal Hygiene Devices. Water closets with
- 412.1 Application. Urinals shall comply with ASME
- 409.5 Backflow Protection. The water supply to a bathtub
- 409.6 Installation and Access. Bathtubs and whirlpool
- 410.1 Application. Bidets shall comply with ASME
- 410.2 Backflow Protection. The water supply to the bidet
- 410.3 Limitation of Water Temperature in Bidets. The
- 411.1 Application. Water closets shall comply with ASME
- 411.2 Water Consumption. The effective flush volume of
- 412.2 Backflow Protection. A water supply to a urinal
- 413.1 Where Required. Each water closet, urinal, clinical
- 413.2 Flushometer Valves. Flushometer valves and
- 413.3 Flush Tanks. Flush tanks for manual flushing shall
- 413.4 Water Supply for Flush Tanks. An adequate quantity of wa…
- 413.5 Overflows in Flush Tanks. Flush tanks shall be provided …
- 414.1 Application. Domestic dishwashing machines shall
- 414.2 Backflow Protection. The water supply connection
- 414.3 Drainage Connection. Domestic dishwashing
- 414.4 Lead Content. Dishwashing machines shall comply
- 415.1 Application. Drinking fountains shall be self-closing
- 415.2 Drinking Fountain Alternatives. Where food is
- 415.3 Drainage Connection. Drinking fountains shall be
- 415.4 Location. Drinking fountains shall not be installed in
- 416.1 Application. Emergency eyewash and shower equipment shal…
- 416.2 Water Supply. Emergency eyewash and shower
- 416.3 Installation. Emergency eyewash and shower equipment sha…
- 416.4 Location. Emergency eyewash and shower equipment shall b…
- 416.5 Drain. A drain shall not be required for emergency
- 417.1 Application. Faucets and fixture fittings shall comply
- 417.2 Deck Mounted Bath/Shower Valves. Deck
- 417.3 Handheld Showers. Handheld showers shall comply
- 417.4 Faucets and Fixture Fittings with Hose Con-
- 417.5 Separate Controls for Hot and Cold Water.
- 417.6 Low-Pressure Water Dispenser. Beverage faucets
- 417.7 Head Shampoo Sink Faucets. Head shampoo sink
- 417.8 Footbaths and Pedicure Baths. The water supplied to spec…
- 418.1 Application. Floor drains shall comply with ASME
- 418.2 Strainer. Floor drains shall be considered plumbing
- 418.3 Location of Floor Drains. Floor drains shall be
- 418.4 Food Storage Areas. Where drains are provided in
- 418.5 Floor Slope. Floors shall be sloped to floor drains.
- 419.1 Application. Food waste disposal units shall comply
- 419.2 Drainage Connection. Approved wye or other
- 419.3 Water Supply. A cold water supply shall be provided
- 420.1 Application. Sinks shall comply with ASME
- 420.2 Water Consumption. Sink faucets shall have a maximum flo…
- 420.3 Pre-Rinse Spray Valve. Commercial food service
- 420.4 Waste Outlet. Kitchen and laundry sinks shall have
- 421.1 Application. Floor sinks shall comply with ASME
- 421.2 Strainers. The waste outlet of a floor sink shall be
- 422.1 Fixture Count. Plumbing fixtures shall be provided
- 422.3 Fixture Requirements for Special Occupancies.
- 422.4 Toilet Facilities Serving Employees and Cus-
- 422.2 Separate Facilities. Separate toilet facilities shall
- 422.5 Toilet Facilities for Workers. Toilet facilities shall
- 422.6 Water Closet Compartment. Public water closets
- 422.7 Urinal Partitions. Each urinal shall be separated with
- 422.8 Cosmetology. [CA] Each school shall provide pub-
- 422.9 Cosmetology Establishments. [CA] Each estab-
- 422.10 Commissaries Serving Mobile Food Prepara-
- 422.11 Employee Lavatories in Food Establishments.
- Chapter 5 — WATER HEATERS
- Chapter 6 — WATER SUPPLY AND DISTRIBUTION
- Chapter 7 — SANITARY DRAINAGE
- Chapter 8 — INDIRECT WASTES
- Chapter 9 — VENTS
- Chapter 10 — TRAPS AND INTERCEPTORS
- Chapter 11 — STORM DRAINAGE
- Chapter 12 — FUEL GAS PIPING
- Chapter 13 — HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICA…
- Chapter 14 — FIRESTOP PROTECTION
- Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
- Chapter 16 — NONPOTABLE RAINWATER CATCHMENT SYSTEMS
- Chapter 17 — REFERENCED STANDARDS
- Appendix A — RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYS…
- Appendix B — EXPLANATORY NOTES ON COMBINATION WASTE AND VENT S…
- Appendix C — ALTERNATE PLUMBING SYSTEMS
- Appendix D — SIZING STORM WATER DRAINAGE SYSTEMS
- Appendix E — MANUFACTURED/MOBILE HOME PARKS AND RECREATIONAL V…
- Appendix F — FIREFIGHTER BREATHING AIR REPLENISHMENT SYSTEMS
- Appendix G — SIZING OF VENTING SYSTEMS
- Appendix H — PRIVATE SEWAGE DISPOSAL SYSTEMS
- Appendix I — INSTALLATION STANDARDS
- Appendix J — COMBINATION OF INDOOR AND OUTDOOR COMBUSTION AND …
- Appendix K — POTABLE RAINWATER CATCHMENT SYSTEMS
- Appendix L — SUSTAINABLE PRACTICES
- Appendix M — PEAK WATER DEMAND CALCULATOR
- Appendix N — IMPACT OF WATER TEMPERATURE ON THE POTENTIAL FOR …
- Appendix O — NON-SEWERED SANITATION SYSTEMS
- Appendix P — PROFESSIONAL QUALIFICATIONS
- Appendix Q — INDOOR HORTICULTURAL FACILITIES
- Appendix R — TINY HOUSES
- Appendix S — ONSITE STORMWATER TREATMENT SYSTEMS