SPS 382.33(9)(d)(d) Dishwashing machines. All dishwashing machines shall discharge to the sanitary drain system. SPS 382.33(9)(d)1.1. ‘Residential type.’ The indirect waste piping from a residential-type dishwashing machine shall not exceed a developed length of 10 feet. The indirect waste piping from a residential-type dishwashing machine shall be installed in accordance with one of the following methods: SPS 382.33(9)(d)1.a.a. Where an air-gap or air-break is located below the countertop, the indirect waste piping from the dishwashing machine shall discharge to a standpipe. The standpipe shall be at least 1 ½ inches in diameter and shall extend at least 15 inches above the trap weir. SPS 382.33(9)(d)1.b.b. Where an air-gap or air-break is located above the countertop, the indirect waste piping from the dishwashing machine shall discharge to local waste piping. The local waste piping shall connect to the kitchen sink branch tailpiece above the trap inlet, the standpipe or to the dishwashing machine connection of a food waste grinder. When the local waste piping discharges to a standpipe, the standpipe shall be at least 1 ½ inches in diameter and shall extend at least 15 inches above the trap weir. Where a hose is used for local waste piping, the developed length shall not exceed 18 inches. SPS 382.33(9)(d)2.2. ‘Commercial.’ Commercial dishwashing machines shall discharge into a sanitary drain system by means of an air-gap or air-break into a trapped and vented receptor. The indirect waste piping may not be more than 30 inches in length. SPS 382.33(9)(e)(e) Drips and drain outlets. Appliances, devices and apparatus not defined as plumbing fixtures which have drip or drain outlets, which discharge to the plumbing system, shall discharge into an approved receptor by means of an approved air-gap or air-break. SPS 382.33(9)(f)2.2. Drains serving elevator pits shall not connect directly with the storm drain system by means of gravity flow piping. SPS 382.33(9)(f)4.4. A drain serving an elevator pit that discharges to a sump shall have a submerged inlet constructed to maintain a minimum 6″ trap seal. SPS 382.33(9)(f)5.5. A sump located in an elevator pit may only receive storm or clear water waste from the elevator pit or the elevator machine room, or both. SPS 382.33(9)(fm)(fm) Elevator threshold drains. Elevator emergency threshold drains provided to meet the requirements of International Building Code s. 3007.3 or 3008.3, as adopted and modified by chs. SPS 361 to 366, may be used only to minimize infiltration of water from fire sprinklers into elevator hoistways. Such drains may not receive other water including wastewater. Elevator threshold drains shall comply with all of the following: SPS 382.33(9)(fm)1.1. In lieu of individual traps, a single trap may serve multiple threshold drains on a single floor serving a single hoistway. SPS 382.33(9)(fm)6.6. The elevator threshold drain stack utilizing a combination drain and vent as permitted by s. SPS 382.31 (17) (d) may not be combined with other plumbing prior to discharging to the building drain or other discharge points. SPS 382.33(9)(fm)8.8. The drain stack shall be sized to accommodate the anticipated design discharge loads of the automatic fire sprinkler system. SPS 382.33(9)(g)(g) Food handling establishments. Plumbing fixtures, devices, appliances, and appurtenances installed in food handling establishments engaged in the storage, preparation, selling, serving, or processing of food shall be installed in accordance with this paragraph. SPS 382.33(9)(g)1.1. ‘Bar and soda fountain sinks.’ A bar sink, whether installed for hand washing or other use, or a soda fountain sink may discharge to the sanitary drain system through indirect waste piping. SPS 382.33(9)(g)1.a.a. Where the indirect waste piping is not trapped, the wastes shall be discharged by means of an air-gap. SPS 382.33(9)(g)1.b.b. Where the indirect waste piping is trapped, the wastes shall be discharged by means of an air-gap or air-break. SPS 382.33(9)(g)2.2. ‘Beer taps, coffee makers, glass fillers and soda dispensers.’ The drip pan from a beer tap, coffee maker, glass filler, soda dispenser or similar equipment shall discharge to the sanitary drain system through indirect waste piping by means of an air-break or air-gap. SPS 382.33(9)(g)3.3. ‘Novelty boxes, ice compartments and ice cream dipper wells.’ Novelty boxes, ice compartments and ice cream dipper wells shall discharge to the sanitary drain system through indirect waste piping by means of an air-gap. SPS 382.33(9)(g)3.b.b. The indirect waste piping draining a novelty box or ice compartment may not discharge or connect to the indirect waste piping or local waste piping of any other fixture, appliance or device other than a novelty box or ice compartment. SPS 382.33(9)(g)4.4. ‘Refrigerated food storage rooms, compartments and display cases.’ Drains serving refrigerated food storage rooms, compartments or display cases shall discharge to the sanitary drain system through indirect waste piping. The indirect waste piping shall drain by gravity to a receptor by means of an air-gap or air-break. Where an air-break is installed, the flood level rim of the receptor shall be at least 2” below the top of the fixture strainer or drain opening in the refrigerated room, compartment or display case. SPS 382.33(9)(g)5.5. ‘Enclosed food processing equipment.’ Coffee urns, egg boilers, potato peelers, steam kettles, steam tables, vending machines and similar types of enclosed food processing equipment shall be discharged to the sanitary drain system through indirect waste piping by means of an air-gap. SPS 382.33(9)(g)6.6. ‘Food preparation.’ Open culinary sink compartments for thawing or washing food shall discharge to the sanitary drain system through an independent connection by means of an air-gap. The fixture drain upstream of the air-gap shall not exceed a length of 30″. SPS 382.33(9)(h)(h) Sterilizers. Appliances, devices or apparatus, such as stills, sterilizers and similar equipment requiring waste connections and used for sterile materials, shall discharge through indirect waste piping to the sanitary drain system by means of an air-gap. SPS 382.33 NoteNote: See s. SPS 382.50 regarding sterilizer wastes. SPS 382.33(9)(i)(i) Cross connection control devices or assemblies. Where a receptor is provided, the vent port discharge from cross connection control devices or assemblies shall discharge to the receptor by means of an air-gap. SPS 382.33(9)(j)(j) Vacuum systems—central units. Central vacuum units shall discharge by means of an air-gap or air break. SPS 382.33(9)(k)1.1. The backwash and drain wastewater from a swimming pool, wading pool or whirlpool shall discharge in accordance with Table 382.38-1. SPS 382.33(9)(k)2.2. The discharge from deck drains serving indoor pools shall be directed to the sanitary sewer via an air-gap. SPS 382.33(9)(k)3.3. The discharge from deck drains serving outdoor pools shall be directed to the storm sewer by way of an air-gap, air-break, or to grade. The distance from the top of the air-break to the pool deck shall be a minimum of 6 inches, terminating at a point above the top of the receptor receiving the deck drain discharge. SPS 382.33(9)(k)4.4. The requirements for sewer connections as specified in ch. SPS 390 applies to all public swimming pools. SPS 382.33(10)(a)(a) The waste discharge of a water treatment device to the drain system shall be protected in accordance with s. SPS 382.41 with respect to cross connection control. SPS 382.33(10)(b)(b) The indirect waste piping or tubing from a water treatment device shall be of a material conforming to one or more of the standards listed in Tables 384.30-8 or 384.30-11. SPS 382.33 NoteNote: For appliances, devices and equipment not included in this section or other sections contact the department for information and proposed installation review.
SPS 382.33 HistoryHistory: Cr. Register, February, 1985, No. 350, eff. 3-1-85; r. and recr. Table 82.33-1 and (9) (g) 5., cr. (8) (c) 3., (9) (g) 6. and (k), Register, May, 1988, No. 389, eff. 6-1-88; r. and recr., (3), am. (9) (c) 1. a., (d) 2. and (g) 4., Register, August, 1991, No. 428, eff. 9-1-91; am. (8) (d) 1., 2. and (9) (g) 3. b., r. (9) (k), cr. (10), Register, February, 1994, No. 458, eff. 3-1-94; correction in (9) (i) 5., made under s. 13.93 (2m) (b) 7., Stats., Register, February, 1994, No. 458; r. and recr. (9) (f), Register, April, 1998, No. 508, eff. 5-1-98; correction in (9) (i) 5. made under s. 13.93 (2m) (b) 7., Stats., Register, April, 1998, No. 508; r. and recr. (9) (i), cr. Table 82.33-3, Register, December, 2000, No. 540, eff. 1-1-01; CR 02-002: am. (5) (a) 2., (7) (b), (9) (c) 1. b., (e), (g) 6., renum. (8) (a) 1., (9) (a) 2. and (10) to be (8) (a), (9) (a) 2. a. and (10) (a) and am. (9) (a) 2. a., r. (8) (a) 2., r. and recr. (8) (c), (d), (9) (b), (d) 1. and (i), cr. (9) (a) 2. b., (c) 1. c., and (10) (b) Register April 2003 No. 568, eff. 5-1-03; CR 02-129: am. (9) (c) 1. b., r. (9) (d) 3. and table 82.33-3, cr. (9) (k) Register January 2004 No. 577, eff. 2-1-04; CR 08-055: r. and recr. (7) (a), cr. (8) (d) 6. and 7., am. (9) (c) 1. a., b. and (f) 1., r. (9) (c) 1. c. Register February 2009 No. 638, eff. 3-1-09; correction in (8) (d) (intro.) made under s. 13.92 (4) (b) 7., Stats., Register February 2009 No. 638; CR 10-064: am. Table 82.33-2 Register December 2010 No. 660, eff. 1-1-11; correction in (1) (b), (2), (3) (intro.), (5) (a) 1., 2., (b), (9) (c) 2. a., 3. c., (f) 1., (g) 1., (k) 1., 4., (10) (a), (b) made under s. 13.92 (4) (b) 7., Stats., Register December 2011 No. 672; CR 23-006: r. and recr. Table 382.33-1, am. (6), (8) (d) (intro.), 2., 6., 7., cr. (8) (d) 8., 9., (9) (intro.), (bm), renum. (9) (c) 2. (intro.), a., b. to (9) (c) 2., 1. c., d., and am., am. (9) (c) 3. (intro.), c., Table 382.33-2 (title), (f) (title), cr. (9) (fm), am. (9) (g) (intro.), 1., (k) 3. Register September 2023 No. 813, eff. 10-1-23; correction in (8) (d) (intro.), 6., 8., 9. b., (9) (bm), (c) 2., (fm) made under s. 35.17, Stats., Register September 2023 No. 813. SPS 382.34SPS 382.34 Wastewater treatment and holding devices. SPS 382.34(1)(1) Scope. The provisions of this section set forth the requirements for design and installation of plumbing wastewater treatment and holding devices, appurtenances and systems, including but not limited to interceptors, catch basins, decontamination tanks and dilution and neutralizing basins. SPS 382.34(2)(2) Materials. All piping, devices and appliances for wastewater treatment and holding devices, appurtenances and systems shall be of approved materials in accordance with ch. SPS 384. SPS 382.34(3)(3) General. Any deleterious waste material which is discharged into a plumbing system shall be directed to a wastewater treatment or holding device. The wastewater treatment or holding device shall be capable of separating, diluting or neutralizing the deleterious waste material to a degree that the wastewater is no longer deleterious. Wastewater treatment or holding devices that retain any waste materials shall be designed and installed to facilitate periodic removal or treatment, or both. SPS 382.34(3)(a)1.1. Except as limited in subd. 2., graywater, storm water, clear water, blackwater and other wastewaters as approved by the department may be reused in conformance with s. SPS 382.70. SPS 382.34(3)(a)2.2. Except as provided in subd. 3., wastewater discharged from water closets or urinals shall not be reused for drinking water. SPS 382.34(3)(a)3.3. All treatment works permitted by the department of natural resources, or a POWTS which includes an in situ soil dispersal or treatment component may treat wastewater discharged from water closets or urinals for reuse. SPS 382.34(3)(b)(b) Deleterious waste materials. For the purpose of this subsection, deleterious waste materials include any waste material, other than that from dwelling units, which may: SPS 382.34(3)(b)1.1. Congeal, coagulate or accumulate in drains and sewers, thereby, creating stoppages or retarding the discharge flow; SPS 382.34(3)(b)3.3. Pass through a treatment process and pollute the watercourse receiving the treatment effluent; SPS 382.34(3)(b)4.4. Create explosive, flammable, noxious, toxic or other hazardous mixtures of materials; or SPS 382.34(3)(b)5.5. Damage, destroy or deteriorate sewers or piping materials or structures. SPS 382.34 NoteNote: See ch. ATCP 93 as to flammable, combustible, and hazardous liquids. SPS 382.34(3)(c)(c) Private systems. The special or industrial wastes from any plumbing system shall be treated, held or dispersed in compliance with the rules of the state agency having jurisdiction. The treatment, holding or dispersal system shall be installed so as not to endanger any water supply which is or may be used or which may create a nuisance, unsanitary conditions or water pollution. SPS 382.34(3)(d)(d) Velocity control. Interceptors, catch basins and other similar devices shall be designed, sized and installed so that flow rates shall be developed and maintained in a manner that solid and floating materials of a harmful, hazardous or deleterious nature will be collected in the interceptor for disposal. SPS 382.34(3)(e)(e) Maintenance. All devices installed for the purpose of intercepting, separating, collecting, holding or treating harmful, hazardous or deleterious materials in liquid or liquid-borne wastes shall be operated and cleaned of intercepted or collected materials or of any residual from treatment at such intervals which may be required to prevent their passage through the interceptor. Grease interceptors shall be maintained on a cycle not to exceed 90 days or per manufacturer’s instructions. SPS 382.34(3)(f)(f) Service reassembly. Any fixed orifice, vent or trap of an interceptor, catch basin or other similar device shall remain intact and shall not be removed or tampered with except for cleaning purposes. After service, all parts of the interceptor, collector or treatment device, such as baffles, weirs, orifice plates, channels, vents, traps, tops, and fastening bolts or screws shall be replaced in proper working position. SPS 382.34(3)(g)1.1. Wastewater holding devices, interceptors, catch basins and other similar devices shall be accessible for service, maintenance, repair and inspection. SPS 382.34(3)(g)1.a.a. No wastewater holding device, interceptor, catch basin or similar device may be surrounded or covered as to render it inaccessible for service or inspection. SPS 382.34(3)(g)1.b.b. No wastewater holding device, interceptor, catch basin or similar device may have its top located more than 6 feet above the surrounding floor. SPS 382.34(3)(g)1.c.c. Enough space shall be provided to enable the removal of any interior parts of the wastewater holding device, interceptor, catch basin or similar device. SPS 382.34(3)(g)1.d.d. At least 18 inches of clear space shall be provided above the top of the wastewater holding device, interceptor, catch basin or similar device. SPS 382.34(3)(g)2.2. An exterior wastewater holding device, interceptor, catch basin or similar device shall not be located within 5 feet of a building or any portion of a building or swimming pool; 10 feet of water service; 2 feet of a lot line and 10 feet of a clearwater cistern. SPS 382.34(3)(g)3.3. An exterior wastewater holding device, interceptor, catch basin, or similar device shall not be located within 10 feet of the high water mark of a lake, stream, pond or flowage. SPS 382.34(3)(g)4.4. An exterior subsurface treatment tank holding component, or reservoir to be installed in an area subject to saturated conditions, shall be installed to effectively prevent flotation of the tank or component. SPS 382.34 NoteNote: The department of natural resources under chs. NR 811 and 812 may require additional setbacks. See ch. SPS 382 Appendix for further explanatory material. SPS 382.34(3)(h)(h) Disposition of retained materials. Deleterious waste materials retained by a wastewater holding device, interceptor, catch basin or similar device shall not be introduced into any drain, sewer or natural body of water without approval of the state agency having jurisdiction. SPS 382.34(4)(a)1.1. Where a drain will be installed to receive the wastewater from floor areas of public buildings and facilities on which self-propelled land, air or water vehicles can be driven, the wastewater shall discharge using one of the following methods: SPS 382.34(4)(a)1.a.a. In areas where vehicles will be serviced, the wastewater shall discharge through a garage catch basin or oil interceptor connected to a municipal sewer or holding tank approved to receive industrial wastewater. SPS 382.34(4)(a)1.b.b. In areas where vehicles will be driven or stored, the wastewater shall discharge through a floor drain equipped with a solid bottom sediment bucket, garage catch basin or oil interceptor. SPS 382.34(4)(a)2.c.c. The minimum depth of the basin shall be 24” measured from the lowest portion of the trap on the outlet of the basin. SPS 382.34(4)(a)2.d.d. The outlet of the basin shall be at least 4” in diameter and trapped with a water seal of at least 6” and constructed on the interior or exterior of the basin. Where an external trap is provided, the trap shall be within 36” of the basin.
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Chs. SPS 301-399 ; Safety, Buildings, and Environment
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