SPS 382.40 NoteNote: The exception of providing hot water under subds. 1. to 3. does not supersede the requirements of other state agencies for providing hot water.
SPS 382.40(3)(c)1.1. Pursuant to s. NR 811.07 the interconnection of 2 or more water supply systems, one system served by a public supply source and the other system served by another supply source is prohibited, unless approved in writing by the department of natural resources. SPS 382.40(3)(c)2.2. A water supply system shall be designed and installed in accordance with s. SPS 382.41 and maintained to prevent nonpotable liquids, solids or gases from being introduced into the potable water supply system through cross connections. SPS 382.40(3)(c)3.a.a. Except as provided in subd. 3. b., when a connection between 2 water supply systems exists, one system having a higher degree of hazard than the other system as specified in s. SPS 382.41, the water supply system with a lower degree of hazard shall be protected as specified in s. SPS 382.41. SPS 382.40(3)(c)3.b.b. When a water treatment device is provided to lower the concentration of a health-related contaminant, cross connection control shall not be required to protect the water supply system downstream of the treatment device from the upstream contaminated source. SPS 382.40(3)(c)4.4. The water supply system shall be protected from thermal expansion when a closed system is created. SPS 382.40(3)(d)1.1. Where buildings or facilities contain water supply systems where the water supply systems have different degrees of hazard, then those water supply systems shall be labeled in accordance with this section. SPS 382.40(3)(d)1.a.a. Aboveground piping supplying water other than potable shall be labeled by tags or colored bands according to Table 382.40–1a. SPS 382.40 NoteNote: When identifying potable water piping or valves with tags or bands, label according to Table 382.40–1a.
SPS 382.40(3)(d)1.b.b. Valves supplying other than potable water shall be identified by tags according to Table 382.40–1a. SPS 382.40(3)(d)1.c.c. The tags or colored bands shall be placed at intervals of not more than 25 feet. Where piping passes through a wall, floor or roof, the piping shall be so identified on each side of the wall and within each compartment. SPS 382.40(3)(d)1.d.d. The colored bands shall be at least 3 inches wide and shall bear text identifying the water or the specific use. SPS 382.40(3)(d)1.e.e. Tags used to identify water outlets, valves and piping shall be of metal or plastic in the shape specified in Table 382.40–1a. SPS 382.40(3)(d)1.f.f. The lettering on the triangular and circular tags shall be at least 1/2 inch in height. SPS 382.40(3)(d)1.g.g. A hose bibb intended to discharge water that does not meet drinking water quality as specified in s. SPS 382.70, shall be labeled as nonpotable or so identified for the specific use or uses, and shall be equipped with a removable handle. SPS 382.40(3)(d)2.2. Piping downstream of cross connection control assemblies as listed in Table 382.22–1 shall be labeled with bands or tags as specified in subd. 1. a. to f. SPS 382.40(3)(d)3.3. Where a building or a structure is served by 2 distribution systems, one system supplied by a public water supply and the other system supplied by a private well, each water distribution system shall be identified to indicate the supply source. SPS 382.40(3)(d)4.4. The installation of each reduced pressure principle backflow preventer, double check backflow prevention assembly, spill resistant vacuum breaker and pressure vacuum breaker shall display a department assigned identification number. SPS 382.40(3)(d)4.a.a. The method to display the department assigned identification number shall be a weather-resistant tag, securely attached to the cross connection control assembly. SPS 382.40(3)(d)4.c.c. The department assigned identification number shall be printed in the blank area with a permanent, waterproof marker or similar indelible method. SPS 382.40 NoteNote: To obtain a Department-assigned identification number for a cross connection control assembly, contact the Department’s Division of Industry Services at P.O. Box 7162, Madison, WI 53707-7162; or at telephone (608) 266-2112 or (877) 617-1565 or 711 (Telecommunications Relay); or at fax (608) 267-9723; or at the Division’s Web site at http://dsps.wi.gov/programs/industry-services. SPS 382.40(3)(e)1.1. A multipurpose piping system shall be designed and installed in accordance with this section and NFPA 13D and materials must be acceptable under the NFPA 13D standard and s. SPS 384.30, with the following exceptions: SPS 382.40(3)(e)1.a.a. A partial or single sprinkler may be installed in a dwelling unit not required to be sprinklered under NFPA 13D. SPS 382.40(3)(e)1.b.b. Limited purpose or limited area sprinklers may be installed in areas not required to be sprinklered. SPS 382.40 NoteNote: See s. SPS 321.095 of the Dwelling Code and s. SPS 362.0903 (10) of the Commercial Building Code as to fire protection provisions for multipurpose piping systems. SPS 382.40(3)(e)2.2. Fire department connections are prohibited in a multipurpose piping system. SPS 382.40(3)(e)4.4. Five gpm shall be added onto the multipurpose calculations for each dwelling connected to a common water supply system. SPS 382.40(3)(e)5.5. A flow test shall be performed at the controlling sprinkler before the system is put into operation. SPS 382.40(4)(a)(a) Private water mains. Private water mains shall be provided with control valves as specified in this subsection. SPS 382.40(4)(a)1.a.a. If a private water main 2” or less in diameter connects to a public water main, a corporation cock shall be installed at the connection to the public water main. SPS 382.40(4)(a)1.b.b. If a private water main 2-1/2” or larger in diameter connects to a public water main, a corporation cock shall be installed not more than 8 feet from the connection to the public water main. SPS 382.40(4)(a)2.a.a. Except as provided in subd. 2. b., if a private water main connects to public water main, a curb stop shall be installed in the private water main between the corporation cock and the property line. SPS 382.40(4)(a)2.b.b. If a private water main 2-1/2” or larger in diameter connects to a public water main, one control valve may serve as the corporation cock and the curb stop. The control valve shall be located not more than 8 feet from the connection to the public water main and shall be accessible for operation. SPS 382.40 NoteNote: See ch. SPS 382 Appendix A-382.40 (4) for further explanatory material. SPS 382.40(4)(b)(b) Water services. Water services shall be provided with control valves as specified in this subsection. SPS 382.40(4)(b)1.a.a. If a water service 2” or less in diameter connects to a public water main, a corporation cock shall be installed at the connection to the public water main. SPS 382.40(4)(b)1.b.b. If a water service 2-1/2” or larger in diameter connects to a public water main, a corporation cock shall be installed not more than 8 feet from the connection to the public water main. SPS 382.40(4)(b)2.a.a. Except for water services serving farm buildings and farm houses, a curb stop shall be installed in each water service which connects to a private water main. The curb stop shall be located outside the building served by the water service. SPS 382.40(4)(b)2.b.b. Except as provided in subd. 2. c., a curb stop shall be installed in each water service which connects to a public water main. The curb stop shall be located between the corporation cock and the property line. SPS 382.40(4)(b)2.c.c. If a water service 2-1/2” or larger in diameter connects to a public water main, one control valve may serve as the corporation cock and the curb stop. The control valve shall be located not more than 8 feet from the connection to a public water main and shall be accessible for operation. SPS 382.40(4)(b)3.3. ‘Building control valves.’ If a water service serves a building, a building control valve shall be provided in the water service as specified in this subsection. SPS 382.40(4)(b)3.a.a. If the water service connects to a public water supply or to a private water supply which has an external pressure tank, the building control valve shall be installed inside the building and located within 3 feet of developed length from the point where the water service first enters the building. If a water meter is provided, the building control valve shall be located upstream of the water meter. SPS 382.40(4)(b)3.b.b. If a private water supply includes an internal pressure tank, the building control valve shall be installed inside the building and located within 3 feet of developed length downstream from the internal pressure tank. SPS 382.40(4)(c)1.1. Control valves shall be installed in water distribution systems serving public buildings as specified in this subdivision. SPS 382.40(4)(c)1.a.a. If a water meter is provided, a control valve shall be installed within 3 feet of developed length downstream from the outlet of the water meter. If bypass piping is provided around a water meter, a control valve shall be installed in the bypass piping. SPS 382.40 NoteNote: See sub. (8) (d) 3. for the requirements relating to the bypassing of water meters.
SPS 382.40(4)(c)1.b.b. A control valve shall be installed in the supply piping to each water heater and water treatment device and in the fixture supply to each plumbing fixture, plumbing appliance and piece of equipment. The control valve may be part of the bypass piping or an internal part of a water treatment device. When the valve is an internal part of the water treatment device, the device shall be removable for service. SPS 382.40(4)(c)1.c.c. If a hot water circulation system is provided, a control valve shall be installed on both the inlet and outlet piping to the circulation pump. If a hot water circulation system has 2 or more return pipe lines, a balancing control valve shall be installed in each return piping line. SPS 382.40(4)(c)1.d.d. The water distribution system for buildings with more than 4 dwelling units or living units shall be provided with control valves in such numbers and at such locations so that the water supplied to all the units within the building can be isolated into groups of 4 of less units. SPS 382.40 NoteNote: See sub. (8) (g) for the valve requirements for water temperature control.
SPS 382.40(4)(c)2.2. Control valves shall be installed in water distribution systems serving one- and 2-family dwellings as specified in this subdivision. SPS 382.40(4)(c)2.a.a. If a water meter is provided, a control valve shall be installed within 3 feet of developed length downstream from the outlet of the water meter. If bypass piping is provided around a water meter, a control valve shall be installed in the bypass piping. SPS 382.40 NoteNote: See sub. (8) (d) 3. for the requirements relating to the bypassing of water meters.
SPS 382.40(4)(c)2.b.b. A control valve shall be installed in the supply piping to each water heater and water treatment device and in the fixture supply to each water closet, exterior hose bibb, plumbing appliance and piece of equipment. When the valve is an internal part of the water treatment device, the device shall be removable for service. SPS 382.40(4)(c)2.c.c. If a hot water circulation system is provided, a control valve shall be installed on both the inlet and outlet piping to the circulation pump. If a hot water circulation system has 2 or more return pipe lines, a balancing control valve shall be installed in each return piping line. SPS 382.40(5)(a)(a) General. Water heating systems shall be sized to provide sufficient hot water to supply peak demand, except for a tankless type water heater that meets the requirements of par. (am). SPS 382.40(5)(am)(am) Tankless type water heaters. All tankless type water heaters shall have minimum flow rate as specified in this paragraph. SPS 382.40(5)(am)1.1. The minimum flow rate of a tankless type water heater may be obtained by multiplying 0.65 by the calculated hot water gallons per minute demand, as determined by Tables 382.40–1t and 382.40–3, provided the heater will achieve a water temperature of 110°F at the terminal fitting or faucet. SPS 382.40(5)(am)2.2. The sizing method in subd. 1. may not be used for sizing a water heater serving a high-flow fixture, a hose bibb, a hydrant, or a fixture that is required to have a supply line with a diameter larger than 1/2 inch. SPS 382.40(5)(am)3.3. For the purposes of subd. 2, “high-flow fixture” means a fixture with a flow rate of more than 4 gallons per minute, at 80 pounds per square inch, and a water velocity not exceeding 8 feet per second. SPS 382.40(5)(b)(b) Temperature maintenance. Except as provided in par. (bm), the developed length of hot water distribution piping from the source of the hot water supply to a plumbing fixture or appliance exceeds 100 feet, a circulation system or self-regulating electric heating cable shall be provided to maintain the temperature of the hot water within the distribution piping. SPS 382.40(5)(b)1.1. If a circulation system is used to maintain the temperature, no uncirculated hot water distribution piping may exceed 25 feet in developed length. SPS 382.40(5)(b)2.2. If a self-regulating electric heating cable is used to maintain the temperature, the cable shall extend to within 25 feet of each fixture or the appliance. SPS 382.40(5)(b)3.3. Water distribution piping conveying circulated water or served by a self-regulating electric heating cable shall be insulated to limit the heat loss at the external surface of the pipe insulation to a maximum of 25 BTUs per hour per square foot for aboveground piping and 35 BTUs per hour per square foot for underground piping. The maximum heat loss shall be determined at a temperature differential, T, equal to the maximum water temperature minus a design ambient temperature no higher than 65°F. SPS 382.40(5)(b)4.4. Water distribution piping served by self-regulating electric heating cable shall be identified as being electrically traced in accordance with ch. SPS 316. SPS 382.40(5)(b)5.5. The installation of self-regulating electric heating cable may be subcontracted by a plumber to another trade. SPS 382.40(5)(b)6.6. All hot water circulation system connections shall be made downstream of the control valve serving the water heating device. SPS 382.40(5)(b)7.7. Hot water circulation piping and tubing may not exceed the maximum velocity requirements specified per the manufacturer. SPS 382.40 NoteNote: See A-382.40 (5) for pipe insulation requirements.
SPS 382.40(5)(bm)(bm) Temperature maintenance; public buildings. Except as required in par. (b) all public lavatories in public buildings shall comply with the provisions of sub. (5) (b), except that allowable hot water supply distances for any fixture shall be calculated from the nearest source of hot water using the method in subd. 1. For public lavatories the allowable supply distance shall comply with the method in either subd. 1 or 2. of this section. In this section hot water sources shall include water heaters, circulating water systems, and self-regulating heat trace temperature maintenance systems. SPS 382.40(5)(bm)1.1. Maximum allowable pipe length method: Under this method the distance from a hot water supply to a fixture, public lavatory, or appliance may not exceed the distances in Table 382.40-1d. Fixture fittings, fixture supply connectors, and faucets may not be part of this calculation. SPS 382.40(5)(bm)2.2. Maximum allowable volume method: Under this method the maximum allowable volume of water between a hot water source and a public lavatory may not exceed 8 ounces. The allowable volume shall be the sum of the internal volume of all pipe, but may not include volume contained within fixture shutoff valves, within flexible water supply connectors to a fixture fitting, or within a fixture fitting. Pipe volume shall be calculated using the values in Table 382.40-1h.
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Chs. SPS 301-399 ; Safety, Buildings, and Environment
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