Heads up: There are no amended sections in this chapter.
  1. Quality of Fixtures: Plumbing fixtures shall comply with approved designs, be constructed from approved materials, have smooth, impervious surfaces and be free of defects and concealed fouling surfaces. (See Appendix A: Table A "Approved Materials and Standards for Plumbing Fixtures" and "Approved Standards for Plumbing Appliances/Appurtenances/Devices".)
  2. Used plumbing material, equipment and fixtures for plumbing installations shall comply with this Part.
  3. Any plumbing equipment condemned by the Department because of wear, damage, defects or sanitary hazards shall not be used in a plumbing system.
  1. Design. When any fixture is provided with an overflow, the waste piping shall be so designed that the standing water in the fixtures cannot rise in the overflow when the stopper is closed or remain in the overflow when the fixture is emptied.
  2. Connection. The overflow pipe from a fixture shall be connected on the house or inlet side of the fixture trap, except that overflows of flush tanks may discharge into the water closets or urinals served by them. No overflow shall be connected to any other part of the drainage system.
  1. Cleaning. Plumbing fixtures shall be installed in a manner to afford easy access for cleaning.
  2. Securing Fixtures. Floor outlet or wall hung fixtures shall be secured by screws or bolts of copper, brass or other equally durable corrosion resistant materials.
  3. Wall-Hung Fixtures. Wall-hung fixtures shall be rigidly supported by a concealed metal supporting member so that no strain is transmitted to the fixture connection.
  4. Setting. Plumbing fixtures and traps shall be set level and in a true alignment.
  5. Potable Water Supply Connection. Hot and cold, tempered and cold, or tempered water only shall be supplied to all plumbing fixtures that are designed for hot and cold, tempered and cold, or tempered water. All mixing faucets and single lever faucets shall have both hot or tempered and cold water connected to them with the hot or tempered water supply on the left side of the faucet. The cross piping of hot or tempered and cold water to a mixing faucet by internal modification of the faucet shall not be allowed. Each lavatory and sink faucet shall have supply pipes that are accessible.
  6. Improper Location. Piping, fixtures or equipment shall not be located or installed so as to interfere with the normal operation of windows, doors or other exit openings. Plumbing fixtures shall be installed in an area where there is sufficient room for the fixture to be used for its intended purpose.
  7. When plumbing is installed it shall meet the requirements of the Illinois Accessibility Code.
  8. Surrounding Materials. Where water closets or urinals are installed for public use, the flooring under the fixture base extending to at least 18 inches from the front and both sides of the water closet or urinal, and extending from the back of the water closet or urinal to the wall, shall be of non-absorbent material.
  9. A water heater thermostat shall not be an acceptable alternative water temperature control device.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Drinking fountains shall not be installed in public toilet rooms.
  2. Fixed wooden, concrete, cement or tile wash trays or sinks used for food preparation, utensil washing, or hand washing shall not be installed in any food service establishment or commercial food establishment.
  3. Bathtub liners/inserts are prohibited unless all of the following conditions are met:
    1. Bathtub liners/inserts must be manufactured to an exact fit over existing bathtubs or be custom fabricated according to the dimensions of an existing bathtub;
    2. The floor (bottom surface) of the liner/insert must have a slip-resistant surface; and
    3. The bathtub liner/insert must be manufactured/fabricated from high-impact plexiglass/ABS or acrylic/plastic material complying with IAPMO/ANSI Z124.8 or from porcelain enameled formed steel complying with ASME A112.19.1/CSA 45.2.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Public Use
    1. Water closet bowls for public use shall be the elongated type, and the seat shall be an antimicrobial plastic open-front seat. Exception: Water closet bowls for public use may have closed-front seats provided that the seat is encased with a continuous plastic sleeve capable of providing a clean surface for every user.
    2. The activating handle, button or mechanism of the flush valve shall be at least 10 inches above the overflow rim of the bowl and not more than 44 inches above the floor.
    3. In schools that are not licensed by the Illinois Department of Children and Family Services as day care centers or homes, water closets provided for the use of children under five years of age shall be of size and height suitable for children's use, either child or juvenile type in accordance with ASME A112.19.2/CSA B45.1.
    4. Water closets designed for institutional use may be used in intensive care facilities and intensive coronary care facilities provided that the water closet swings only horizontally and has an integral trap. A water closet flushometer shall be used to flush the fixture. The plans and specifications shall be submitted to the Department for approval prior to installation, and approval will be in writing from the Department provided that the requirements of this subsection (a) are met.
  2. Water Closet Tanks. Water closet tanks shall have a volume sufficient to properly flush the water closet bowls with which they are connected.
  3. Ballcocks. Ballcocks for flush tanks shall be of the anti-siphon type, be properly installed, and have a provision for trap refill.
  4. Flushing Device. The flush valve seat in all water closet tanks shall be 1 inch or more above the flood level rim of the water closet bowl, with the exception of one-piece water closets in accordance with ASME A112.19.2/CSA B45.1.
  5. Flushometer Valve. Flushometer valves shall comply with ASSE 1037. Flushometer valves shall be installed so that they are readily accessible for repair. When the valve is operated, it shall complete the cycle of operation automatically, opening fully and closing completely under the service pressure. At each operation, the valve shall deliver water in sufficient volume and at a rate that will thoroughly flush the fixture and refill the fixture trap. Flush valve flow shall be regulated. Protection against backflow shall be provided by an approved vacuum breaker installed on the discharge side of the flushing valve. The bottom of the vacuum breaker, or the critical level line shown on the vacuum breaker, shall be at least 4 inches above the overflow rim of the bowl (see Section 890.1140(a) and (b)). Not more than one water closet shall be served by a single flushometer valve.
  6. Seats. Water closets shall be equipped with seats of smooth, non-absorbent material. All seats of water closets provided for public use shall be an antimicrobial plastic material and an open-front style, except that closed-front seats may be provided if the seat is encased with a continuous plastic sleeve ensuring a clean surface for every user. No water closet seat shall be more than 11/2 inches thick. Seats for accessible water closets may be open or closed front, and may have a lid or not have a lid.
  7. A flushometer tank (or pressurized flushometer valve in accordance with ASSE 1037) shall be used only with a water closet bowl specifically designed for that type tank/flushing device (i.e., in accordance with ASME A112.19.2/CSA B45.1) and when the flow pressure at the fixture meets the manufacturer's minimum recommendations.
  8. Water closets that rely on substances other than water for proper operation shall comply with the Private Sewage Disposal Code. Privies and chemical toilets shall not be used inside any building.
  9. Bidet. A bidet shall be equipped with hot and cold, tempered and cold, or tempered water only. An atmospheric vacuum breaker shall be installed on the discharge side of the flushing valve. The bottom of the vacuum breaker, or the critical level line shown on the vacuum breaker, shall be at least 4 inches above the overflow rim of the bidet.
  10. Prohibited Water Closets. Hopper-style water closets and water closets with concealed couplings or submerged side inlets are prohibited. (See Appendix F.Illustration A.)
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Automatic Flushing Tank.
    1. Flushing tanks shall be used for washout urinals only. Tanks flushing more than one (1) urinal shall be automatic, shall provide a sufficient volume of water to flush all urinals simultaneously, and shall flush at least four (4) times per hour. One automatic flushing tank may serve no more than three (3) washout urinals.
    2. Float Valves. Float valves or ball cocks, if provided for flushing tanks, shall be of the anti-siphon type and of sufficient capacity to refill the trap.
  2. Urinal Flush Valves. No valve shall be used to flush more than one (1) blow-out, siphon-jet or pedestal urinal. One (1) properly sized automatic flush valve may serve more than one (1), but not more than a battery of three (3) washout urinals, and shall flush at least four (4) times per hour. The water supply line to each urinal flush valve shall be as required by the manufacturer, but not less than three-fourths (3/4) inch. Protection against backflow shall be provided by an approved vacuum breaker. (See Sections 890.1130(a), (b), (c) and 890.1140.)
  3. Trough urinals are prohibited.
  1. Strainers. All plumbing fixtures other than water closets, urinals with integral traps, and any sink outlet having a disposal unit shall be provided with a strainer. A pop-up waste shall be considered a strainer.
  2. Bathtubs — Waste Outlets. The waste outlet for a bathtub shall have a strainer or stopper and shall have an outlet at least one and one-half (1 1/2) inches in diameter.
  1. Waste Outlets. Wastes shall have a strainer or stopper and have a waste outlet at least 11/4 inches in diameter.
  2. Lavatory Faucets. All lavatory faucets shall have air gaps as specified in Appendix A.Table C.
  3. When metering faucets are located on lavatories in public restrooms, they shall be adjusted to remain open for a minimum of 10 seconds and shall comply with the water consumption requirements of ASME/ANSI 112.18.1. Metering faucets shall be designed for hot and cold, tempered and cold, or tempered water only.
  4. Fixture Calculation. Eighteen lineal inches of wash sink or 18 inches of a circular basin, when provided with water outlets for the space, shall be considered equivalent to one lavatory. (See Appendix F.Illustration B.)
  5. Water Temperature. All lavatory faucets for public use shall be provided with an automatic safety water mixing device to prevent sudden unanticipated changes in water temperature or excessive water temperatures. The automatic safety water mixing device shall comply with ASSE 1070 or 1017 in accordance with Section 890.210, and shall be adjusted to a maximum setting of 110 degrees Fahrenheit, at the time of installation. Exception: Units constructed in accordance with Section 890.1220(a)(9)(B) may be used in lieu of an automatic safety water mixing device to provide hot or tempered water to public lavatories.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Shower Installation. All shower compartments, except those built directly on a slab floor or having receptors constructed of precast stone, terrazzo, concrete, molded stone, molded fiberglass, or an equally durable material such as cultured stone or synthetic stone, shall have a lead, copper, ABS, PVC or fiberglass shower pan. (See Section 890.220.) All sides of the shower pan shall turn up at least 2 inches above the finished shower floor level. Precast molded receptors shall have a minimum 1/4- inch thick flange. Traps shall be constructed so that the pan is fastened to the trap at the seepage entrance, making a water-tight joint between the pan and the trap. Shower receptacle waste outlets shall be at least 2 inches in diameter and have a removable strainer.
  2. Water Temperature Safety. All shower compartments and shower-bath combinations shall be provided with an automatic safety water mixing device to prevent sudden unanticipated changes in water temperature or excessive water temperatures. The automatic safety water mixing device shall comply with ASSE 1016/ASME A112.1016/CSA B125.16, in accordance with Section 890.210, and be designed with a maximum handle rotation limit/stop, or comply with ASSE 1017 or ASSE 1070, in accordance with Section 890.210. The automatic safety water mixing device shall be adjusted to a maximum setting of 115 degrees Fahrenheit at the time of installation. The temperature of mixed water provided to multi-shower units or multi-person showers shall be controlled by a master automatic safety water mixing device, or the mixed water temperature shall be individually regulated by automatic safety mixing valves for each shower unit. A water heater thermostat shall not be an acceptable alternative water temperature control device.
  3. Dimensions. Single family shower compartments or stalls shall have at least 1,024 square inches outside dimension (OD) floor area and shall be at least 32 inches in shortest outside dimension. All other shower compartments or stalls shall have no less than 1,296 square inches outside dimension floor area and shall be at least 32 inches in shortest outside dimension.
  4. Materials. Shower walls shall be constructed of durable, smooth, non-absorbent, non-corrosive and waterproof materials, such as fiberglass, enameled metal or plastic sheeting. All shower compartments or stalls shall have a slip-resistant floor (bottom) surface.
  5. Public or Institution Showers. Floors of public shower rooms shall be drained so that no waste water from any bather will pass over areas occupied by other bathers. This will not prohibit the use of column showers.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Waste Outlets. Kitchen sinks shall be provided with waste outlets at least 11/2 inches in diameter. Other special purpose sinks such as bar sinks, lab sinks and dipper wells may have smaller waste outlets. Waste outlets shall be of the flat or basket (cup) strainer type.
  2. Food Grinders. Sinks in which food grinders are installed shall have a waste opening inlet for the food grinder at least 31/2 inches in diameter.
  3. No special purpose sink shall be substituted for kitchen purposes.
  4. Service sinks, mop sinks, laundry trays or similar utility sinks shall be provided with hot water.
  5. Sinks in laboratories that are not designated for hand washing or personal hygiene may be supplied with cold water only.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Installation. Food waste disposal units shall be trapped separately from any other fixture or compartment, shall be connected directly to the sanitary drainage system, and shall be properly vented. Dishwashers shall not discharge into food waste disposal units. Units may have either automatic or hand-operated water supply control. (See Section 890.1130(a), (b) and (c).)
  2. Commercial-Type Grinders. Commercial-type food grinders shall be provided with a waste line at least 2 inches in diameter. (See Appendix F: Illustration D.)
(Source: Amended at 28 Ill. Reg. 4215, effective February 18, 2004)
  1. Design and Construction. Drinking fountains shall conform to the standards specified in Appendix A.Table A. No modification of the mouth guard or nozzle shall be made. (See Appendix F.Illustration E.)
  2. Protection of the Water Supply
    1. All drinking fountain nozzles, including those which may at times extend through a water surface, with an orifice not greater than 7/16 or 0.440 inch diameter or 0.150 square inches area, shall be placed so that the lower edge of the nozzle orifice is at an elevation at least 3/4 inch above the flood level rim of the receptacle.
    2. The 3/4 inch elevation shall also apply to nozzles with more than one orifice, provided that the sum of the area of all orifices shall not exceed the area of a circle 7/16 inch in diameter or shall not exceed 0.150 square inches area.
    3. The nozzle shall be set at an angle from vertical to prevent the return of water in the jet to the orifice.
  3. Material. The fountain shall be constructed of impervious materials such as vitreous china, porcelain, enameled cast iron, stainless steel, or other metals or stoneware. (See Section 890.610.)
  4. Flow Regulator. The water supply for the drinking fountain shall be provided with an adjustable valve fitted with a loose key stop or an automatic valve regulating the rate of flow of water through the fountain so that the valve manipulated by the user of the fountain will merely turn the water on or off.
  5. Installation and Location. Drinking fountains shall not be installed as an integral part of or connected to any other plumbing fixture, such as a lavatory or sink, nor shall a drinking fountain be installed in a restroom or toilet room, except those in correctional facilities.
  6. Substitution. Whenever a drinking fountain is required by this Part, bottled drinking water or a water dispensing faucet (water station) may be substituted for a drinking fountain, provided that drinking water is accessible to the public. When bottled drinking water is provided in lieu of a drinking fountain, the bottled water used shall be commercially sealed in accordance with the Illinois Bottled Water Act and the Illinois Safe Bottled Water Act.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Trap and Strainer. Floor drains shall be trapped and have a minimum water seal of 2 inches and shall be provided with a removable strainer. The open area of the strainer shall be at least 2/3 of the area of the drain line to which it connects. (See Appendix F.Illustration F.)
  2. Trench drains for gas or oil discharges shall be constructed of cast iron, steel, polymer concrete, fiberglass, high-density polyethylene (HDPE), or Schedule 40 PVC material. Continuous trench drains for gas or oil discharges shall have a trapped and vented opening no less than every 40 lineal feet. Intermittent trench drains shall be treated as individual floor drains and shall meet the trap and venting requirements for floor drains.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. The water supply inlet to kidney dialysis equipment shall have a reduced pressure principle backflow preventer assembly complying with ASSE 1013 or a fixed air gap.
    1. A portable dialysis unit or machine shall have a reduced pressure principle backflow preventer assembly installed on the water supply inlet on the unit.
    2. Stationary dialysis equipment within a facility shall require, at the filter room or the dialysis machines, a reduced pressure principle backflow preventer assembly on the water supply or a water supply with a fixed air gap.
    3. Dialysis equipment shall be installed in accordance with this Part and the manufacturer's specifications. Any conflicts shall be submitted to the Department for resolution.
  2. The water supply to a dialysis reuse room or dialysis machine repair room shall be isolated from all other deionized (DI) or reverse osmosis (RO) water lines by an RPZ or an air gap.
  3. A sign no smaller than 8 by 10 inches with the wording "This Water For Dialysis Only" shall be placed above a sink with DI water or RO water supplied to the faucet.
  4. The discharge for each dialysis unit or machine, portable or stationary, shall be provided with an individual indirect waste connection to the sanitary drainage system. Each stand pipe shall be individually trapped and vented.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. A reduced pressure principle backflow preventer assembly conforming to ASSE 1013, or a fixed air gap, shall be installed on each dental unit or group of dental units.
  2. Dental vacuum systems connected to the water supply shall be provided with backflow protection.
  3. If a dental unit has a water outlet below the flood rim level of a cuspidor, then an approved reduced pressure principle backflow preventer assembly, a fixed air gap, an air vent hole on the outlet, or an approved vacuum breaker shall protect the water supply from each dental unit.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Whirlpool bathtubs shall be installed so that the tub, pump, jets and pump tubing drain completely after each use. The pump shall be located above the weir of the whirlpool tub trap.
  2. All whirlpool bathtubs shall comply with ASME A112.19.7/CSA 45.10 (Whirlpool Bathtub Appliances). The suction fittings used in whirlpool bathtubs shall conform to ANSI/APSP 16 (Standard Suction Fittings for Use in Swimming Pools, Wading Pools, Spas, and Hot Tubs).
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
Wash water and rinse water drain lines from water softeners and other types of water treatment units shall discharge through a vertical air gap at least twice the diameter of the pipe, but not less than two (2) inches. Any water softening unit which depends on a venturi created by the flow of water from the water supply line to the softener, for the purpose of siphoning brine solution for regeneration, shall not be required to have a backflow preventer on the water supply line. All other types (those that depend on internal check valves to prevent backflow and/or have the inlet supply of water stopped during regeneration) shall have a double check valve backflow preventer assembly installed on the inlet water supply line.
  1. Domestic Dishwasher (Private Residence). When a domestic dishwashing machine drain line is connected to the house side of a trap from a sink, the drain from the dishwasher shall be carried up to the underside of the spill rim of the sink. Dishwashing machines shall discharge separately into a trap or tail piece of the kitchen sink and shall not connect to the food waste disposal unit.
  2. Water Supply Connection. The water supply to commercial dishwashing machines shall be connected through an air gap or by means of proper backflow protection, e.g., a non-pressure type (atmospheric) vacuum breaker or a dual check valve backflow preventer assembly (DuC), depending upon the circumstances.
  3. Commercial dishwashing machines shall indirectly discharge to a proper receptor connected to the drainage system or as permitted in Section 890.1010(a).
  4. Hot Water. A commercial dishwashing machine or similar dishwashing equipment that relies upon hot water for sanitizing dishes and utensils, rather than chemicals for sanitizing, shall provide rinse water at 180 degrees F., except for a single-tank, stationary-rack, single temperature dishwashing machine which shall provide a rinse water temperature of 165 degrees F., in accordance with Section 750.830(h) of the "Food Service Sanitation Code" (77 Ill. Adm. Code 750).
  1. Water Supply Connection. The water supply to garbage can washers shall be connected through an air gap or by means of proper backflow protection in accordance with Sections 890.1130 and 890.1140.
  2. Discharge. Garbage can washers shall not discharge through a trap serving any other device or fixture.
  3. Baskets. The receptor receiving the waste water from garbage can washing shall be provided with a basket, strainer or similar device to catch large solid waste particles, thereby preventing their discharge into the building drainage system.
  4. Grease Interceptor. The discharge from a garbage can washer shall be directed to a grease interceptor. (See Section 890.510.)
  1. Waste openings. Each compartment of a laundry tray shall be provided with a waste opening at least 11/2 inches in diameter and with a stopper or strainer.
  2. Commercial Laundry Drains. Commercial laundry machines shall discharge individually into a trapped and vented outlet or may discharge into a trapped and vented trench drain. (Also see Section 890.530(b), which requires all commercial laundries to have a lint separator/interceptor.)
  3. All laundry/washer boxes shall have a minimum of a 2 inch drain that is properly trapped and vented. (See Section 890.410(b).)
(Source: Amended at 28 Ill. Reg. 4215, effective February 18, 2004)
  1. Emergency showers and eye wash stations within a building shall be provided with potable water and a trapped and vented receptor and shall comply with ANSI Z358.1.
  2. Emergency eye wash stations shall not be installed on a faucet spout.
  3. Baptistries, ornamental and lily ponds, aquariums, ornamental fountain basins, and similar type constructions, when provided with water supplied from the potable water system, shall be protected from back siphonage as required in Section 890.1130(f).
  4. A request for permission to install special fixtures or items designed for a particular purpose requiring water and waste connections not otherwise provided for in this Part shall be submitted, in writing, to the Department for approval prior to installation.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. Minimum Number of Fixtures Required. Plumbing fixtures shall be provided, for each building type and occupant load, in the minimum numbers shown in Appendix A.Table B, Minimum Number of Plumbing Fixtures, except as noted in footnote 2. Questions concerning the minimum numbers of fixtures required for building types not listed in Appendix A.Table B, shall be referred to the Department in writing prior to construction for a decision concerning the minimum numbers (and types) of plumbing fixtures required. The Department's decision shall be in writing based on Appendix A.Table B.
    1. Building Classification. For purposes of this Part, buildings shall be classified according to the types shown in Appendix A.Table B. Buildings that incorporate more than one type of building use or occupancy, as classified by the Department, shall provide the combined numbers of fixtures required for the individual uses. Individual businesses within the same building or within an enclosed mall may share public or employee restroom facilities, provided that the access to the restrooms does not require trespass on adjoining businesses or leased space. Restrooms shall be open at all times when any individual business within the same building or within an enclosed mall is open.
    2. Occupant Load. For those building types for which the minimum number of plumbing fixtures required in Appendix A.Table B is dependent upon the building's occupant load, the occupant load shall be the estimated total occupant load. If the building's occupant load is not known or determinable, the following shall be used to estimate the total occupant load:
      1. In assembly places (sports arenas, stadiums, convention centers, theaters, auditoriums, gymnasiums or other facilities for spectator events); worship places and funeral homes; schools; office buildings; food service establishments; and mercantile units, the total occupant load (employees and public users of the facility) shall be based on the capacity of the rooms or spaces used for assembly purposes or other intended occupancy and shall be determined as follows:
        1. In rooms or spaces with fixed seating, the occupant load shall be the actual number of seats provided. When no divisions between seats are provided (e.g., benches or pews), fixed seating shall be computed assuming 18 inches per person.
        2. In rooms or spaces without fixed seating, the occupant load shall be determined by dividing the gross floor area by the estimated floor area per person shown in the following table:

          Building Type or Occupancy Floor Area per
          Person (Sq. Ft.)
          Assembly Places — Facilities
          for Spectator Events;
          Worship Places and Funeral Homes
          50
          Museums, Libraries, Exhibition
          Areas and Similar Uses
          50
          Schools
          50
          Day Care Centers
          70
          Office Buildings
          200
          Food Service Establishments,
          Clubs, Taverns, and Other Eating/Drinking Facilities
          30
          Mercantile Units, Except
          Grocery Stores, Auction Houses, Sale Barns, Car Auction Centers, and other similar Mercantile Units
          — First Floor
          100
          — All Other Floors
          120
          Combination Grocery
          Store/Non-Grocery
          Mercantile Units
          150
          Mercantile Units, such a
          s Auction Houses, Sale Barns,
          Car Auction Centers, and
          other similar Mercantile Units
          40
          Grocery Stores
          200
          Storage/Shipping Area
          400
          Power Plants/Industrial Units
          500
        3. For a drive-in food service establishment, the occupant load shall be considered as equal to the number of parking stalls.
      2. Dormitories and Institutions. For dormitories, penal institutions and other residential institutions other than hospitals, the total occupant load shall be based upon the number of beds in the dormitory or institution.
      3. Restroom Location and Requirements. The required number of plumbing fixtures for a restroom shall be located within the restroom area and not in the hallways or vestibules. Lavatories required by Appendix A.Table B shall be installed in restrooms at a ratio of not less than one lavatory per two water closets or urinals. (See Footnote 2, Appendix A.Table B.)
  2. Required Restroom Facilities and Drinking Fountains
    1. Employee Restrooms and Drinking Fountains
      1. Restroom facilities and drinking fountains shall be provided for all employees within each place of employment. The minimum numbers of fixtures provided shall be based on the maximum number of male and female employees working at any one time, as shown in Appendix A.Table B. (The numbers of fixtures required for employees are included in the numbers shown in Table B for all building types/uses except hospital rooms, penal institutions and other institutions. The entry in Appendix A.Table B (All Facilities for Employee Use) shall be used to determine the minimum number of fixtures required for employees in hospitals, penal and other institutions, and all other buildings/facilities that do not appear in Appendix A.Table B.)
        1. If there are more than five employees working at any one time, separate restrooms for men and women shall be provided.
        2. If there are no more than five employees working at any time, one restroom may serve both sexes. A restroom shall have a minimum of one water closet and one lavatory.
        3. For schools, day care centers and office buildings, the employee restrooms and drinking fountains shall be located on the same floor or one floor above or below each location where employees regularly work.
        4. Individual businesses within the same building or within an enclosed mall may share public/employee restroom facilities, provided that the access to the restrooms does not require trespass on adjoining business or leased space. The restrooms shall be designed for the combined occupant load of the individual businesses served, be open at all times when any individual business is open, and be located no more than 300 feet from the entrance of each business served. Exception: Any food service establishment that sells or serves food or beverages to be consumed on its premises or within the building/mall shall be located no more than 100 feet from the shared public/employee restrooms and shall be on the same floor.
        5. Kiosks, which are free-standing places of employment, that have five or fewer employees at any time who have access to public restrooms and a drinking fountain within 300 feet of the kiosks, shall not be required to have employee restroom facilities or a drinking fountain.
      2. If public restrooms and drinking fountains are also required for the building type, employees may share the restrooms and drinking fountains with the public, provided that the numbers of fixtures are sufficient for the combined numbers of males and females and the restrooms and drinking fountains are provided within the place of employment (and within the required location for schools, day care centers and office buildings).
    2. Public Restrooms and Drinking Fountains
      1. General Requirements
        1. Buildings with 5,000 square feet of gross public area or with occupancies of 100 or more persons shall provide public restrooms and drinking fountains as shown in Appendix A.Table B. Buildings other than those exceptions in subsection (b)(2)(B), with less than 5,000 square feet of gross public area, or with occupancies of fewer than 100 persons, need not provide public restrooms and drinking fountains.
        2. Individual businesses within the same building or within an enclosed mall, may share public/employee restroom facilities, provided that the access to the restrooms does not require trespass on adjoining business or leased space. The restrooms shall be designed for the combined occupant load of the individual businesses served, always be open when any individual business is open or when employees are present, and be located no more than 300 feet from the entrance of any business served. Exception: Any food service establishment that sells food or beverages to be consumed on its premises or within the building/mall shall be located no more than 100 feet from the shared public/employee restrooms and shall be on the same floor.
        3. When public restroom facilities are required by this Part, separate facilities for males and females shall be provided. If additional public restroom facilities are provided in excess of the minimum requirements of this Part, they shall comply with one of the following:

          • For each additional two water closets or urinals installed in a restroom, one additional lavatory shall be installed in that restroom.
          • Unisex restrooms shall not have more than one water closet and one lavatory and the option of one urinal.
        4. Plumbing shall meet the requirements of the Illinois Accessibility Code.
      2. Additional Requirements for Special Building Types
        1. All food service establishments that sell or serve food or beverages to be consumed on the premises (regardless of their gross area) shall provide readily accessible restroom facilities for the public. If public restrooms are not provided within the premises of the food service establishment, they shall be located within the same building, on the same floor/level and within 100 feet of an entrance to the food service establishment, and they shall be available for public use at all times that the food service establishment is open. Exception: Food service establishments with no more than 10 combined employees and seats (for patrons) at any one time need not provide public restrooms, provided that the employee restrooms are accessible and made available to the public.
        2. All businesses selling motor vehicle fuel to the public (regardless of their gross area) shall provide at least one public restroom for male use and one public restroom for female use. Exception: Facilities that do not have any employees working as attendants during any part of a 24 hour period and sell only motor fuel to the public using automated machines need not provide male/female public restrooms or drinking fountains. One employee restroom shall be provided for use by maintenance staff when maintenance staff are present.
(Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014)
  1. General Plumbing. All plumbing shall be sized, installed and maintained in accordance with applicable provisions of this Part.
  2. General Restrooms. Restrooms for employees shall be provided and accessible to employees at all times. If a restroom is not located within the building, then there shall be an accessible and available restroom within 300 feet of the building.
(Source: Added at 28 Ill. Reg. 4215, effective February 18, 2004)
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