Chapter SPS 382

SPS 382.41(3)(b)6. 6.

SPS 382.41(3)(b)6.a. a. A high hazard situation shall be considered to exist for the connection of 2 water supply systems one supplied by a public water supply and the other system supplied by a private well.

SPS 382.41 Note Note: The interconnection of a public water supply system and another source of water is addressed in ss. NR 811.06 and 811.07 and must be approved by the Department of Natural Resources.

SPS 382.41(3)(b)6.b. b. Cross connection control devices used in conjunction with automatic fire sprinkler systems shall be listed by an acceptable testing agency for such an application under the standards governing the design and installation of automatic fire sprinkler systems.

SPS 382.41(3)(b)7. 7. A cross connection situation shall not be considered to exist when a multipurpose piping system serves a one- or 2- family dwelling provided the sprinkler system is constructed of materials and joints suitable for water distribution systems as specified in ss. SPS 384.30 (4) (e) and 384.40, respectively.

SPS 382.41(3)(c) (c) Containment.

SPS 382.41(3)(c)1. 1. For sewerage treatment facilities which are required to conform with ch. NR 110, in addition to the cross connection control required for each potable water usage or water outlet, a reduced pressure principle backflow preventer shall be installed:

SPS 382.41(3)(c)1.a. a. In the water service to each building or structure within the complex;

SPS 382.41(3)(c)1.b. b. In the private water main upstream of all water services serving the facility; or

SPS 382.41(3)(c)1.c. c. In the water distribution system upstream of all water outlets and in the process piping network upstream of all points of use, if both a water distribution system and a process network is contained within the same building or structure.

SPS 382.41(3)(c)2. 2. For marinas, wharves and docks where potable water outlets are provided to serve boats or ships, in addition to the cross connection control required for each potable water outlet or usage, a reduced pressure principle backflow preventer shall be installed in the water supply system to limit backflow into the water supply source.

SPS 382.41(3)(c)3. 3. The installation of a cross connection control device in the water supply system for a building or structure shall not alleviate the requirement to provide cross connection control for the connection of each plumbing fixture, piece of equipment, appliance or other piping system.

SPS 382.41(3)(d) (d) Prohibitions.

SPS 382.41(3)(d)1. 1. The use of a toxic solution as a heat transfer fluid in single-wall heat exchanger for potable water is prohibited.

SPS 382.41(3)(d)2. 2. A cross connection control method, device, or assembly may not be bypassed without a cross connection control method, device, or assembly of at least equal protection.

SPS 382.41(3)(e) (e) Existing automatic fire sprinkler systems. An alteration, modification or addition to an existing automatic fire sprinkler shall necessitate conformance with this section, if the:

SPS 382.41(3)(e)1. 1. Existing water supply line to the existing sprinkler system is increased in diameter; or

SPS 382.41(3)(e)2. 2. Existing device or method which had been previously recognized to address cross connection concerns is to be removed or replaced.

- See PDF for table

⋄ = The use a of a hose connection backflow preventer, dual check backflow preventer wall hydrant-freeze resistant or a hose connection vacuum breaker in a continuous pressure situation shall be limited to campgrounds and marinas.

1 = Closed loop boiler feed only, standard does not require NSF/ANSI 372 or NSF/ANSI/CAN-61 conformance.

SPS 382.41(4) (4) Limitations.

SPS 382.41(4)(a) (a) Cross connection control devices shall be limited in use in accordance with the respective standard, unless otherwise specifically permitted under this subsection.

SPS 382.41(4)(b) (b)

SPS 382.41(4)(b)1. 1. Except as provided in pars. (b) 2. and (o), an atmospheric-type vacuum breaker shall be installed such that the bottom of the device or the critical level mark on the device is at least 6 inches above all of the following:

SPS 382.41(4)(b)1.a. a. The flood level rim of the receptor serving the water supply port.

SPS 382.41(4)(b)1.b. b. The highest point downstream from the device where backpressure would be created.

SPS 382.41(4)(b)1.c. c. The highest point of an injection or aspiration port.

SPS 382.41(4)(b)2. 2. A deck-mounted atmospheric type vacuum breaker shall be installed such that the bottom of the device or the critical level mark on the device is at least 1 inch above all of the following:

SPS 382.41(4)(b)2.a. a. The flood level rim of the receptor serving the water supply port.

SPS 382.41(4)(b)2.b. b. The highest point downstream from the device where backpressure would be created.

SPS 382.41(4)(b)2.c. c. The highest point of an injection or aspiration port.

SPS 382.41(4)(c) (c)

SPS 382.41(4)(c)1. 1.

SPS 382.41(4)(c)1.a. a. The use a of a hose connection backflow preventer, dual check backflow preventer wall hydrant-freeze resistant or a hose connection vacuum breaker in a continuous pressure situation shall be limited to campgrounds and marinas.

SPS 382.41(4)(c)1.b. b. The use of a hose connection backflow preventer and a hose connection vacuum breaker shall be limited to the discharge side of a control valve such as a faucet or hose bibb.

SPS 382.41(4)(c)2. 2. A hose connection backflow preventer and a hose connection vacuum breaker may not be employed in backpressure situations of more than 10 feet of water column.

SPS 382.41(4)(d) (d) A backflow preventer with intermediate atmospheric vent:

SPS 382.41(4)(d)1. 1. May not be employed in backpressure situations of more than 150 psig; and

SPS 382.41(4)(d)2. 2. May not serve boilers having a maximum steam pressure setting greater than 15 psig or a maximum water pressure setting greater than 30 psig.

SPS 382.41(4)(e) (e)

SPS 382.41(4)(e)1. 1. A reduced pressure principle backflow preventer and a reduced pressure detector backflow preventer may not be subjected to a backpressure greater than twice the rated working pressure of the device.

SPS 382.41(4)(e)2. 2. A reduced pressure principle backflow preventer and a reduced pressure detector backflow preventer which serve a water-based fire protection system may have a test outlet located between the number 2 check valve and the number 2 listed indicating control valve.

SPS 382.41(4)(e)3. 3. A reduced pressure principle backflow preventer and a reduced pressure detector backflow preventer which are 2” or smaller in size and which serve a water-based fire protection system are not required to have a test cock on the number one listed indicating control valve.

SPS 382.41(4)(f) (f) A hand-held shower may not be employed in backpressure situations of more than 5 feet of water column.

SPS 382.41(4)(g) (g)

SPS 382.41(4)(g)1. 1. A double check backflow prevention assembly and a double check detector assembly backflow preventer may not be subjected to a backpressure greater than twice the rated working pressure of the device.

SPS 382.41(4)(g)3. 3. A double check backflow prevention assembly and a double check detector assembly backflow preventer which are 2” or smaller in size and which serve a water-based fire protection system are not required to have a test cock on the number one listed indicating control valve.

SPS 382.41(4)(h) (h) A water supply fed trap seal primer valve shall be installed such that the bottom of the device or the critical level as marked on the device is at least 12” above:

SPS 382.41(4)(h)1. 1. The connection to the trap; and

SPS 382.41(4)(h)2. 2. The highest point downstream from the device where backpressure would be created.

SPS 382.41(4)(i) (i) A vacuum breaker wall hydrant, freeze resistant automatic draining type or a freeze resistant sanitary yard hydrant, may not be employed in backpressure situations of more than 10 feet of water column.

SPS 382.41(4)(k) (k) A pressure type vacuum breaker assembly shall be installed such that the bottom of the device or the critical level mark on the device is at least 12” above all of the following:

SPS 382.41(4)(k)1m. 1m. The flood level rim of the receptor serving the water supply port.

SPS 382.41(4)(k)2m. 2m. The highest point downstream from the device where backpressure would be created.

SPS 382.41(4)(k)3m. 3m. The highest point of an injection or aspiration port.

SPS 382.41(4)(L) (L) A laboratory faucet backflow preventer may not be employed in backpressure situations of more than 6 feet of water column.

SPS 382.41(4)(m) (m) The cross connection control device to serve a hose bibb or hydrant that penetrates an exterior wall of a heated structure may not prevent a hose bibb or hydrant from being freeze resistant automatic draining as required under s. SPS 382.40 (8) (a).

SPS 382.41(4)(n) (n) A spill resistant vacuum breaker shall be installed so that the bottom of the device or the critical level mark on the device is at least 12” above all of the following:

SPS 382.41(4)(n)1. 1. The flood level rim of the receptor serving the water supply port.

SPS 382.41(4)(n)2. 2. The highest point downstream from the device where back pressure would be created.

SPS 382.41(4)(n)3. 3. The highest point of an injection or aspiration port.

SPS 382.41(4)(o) (o) A water-fed trap seal primer shall be provided with high hazard backflow protection compliant with this section and all the following:

SPS 382.41(4)(o)1. 1. Fixture trap or tailpiece trap seal primers shall consist of a 1 1/4 inch (32 mm) or larger tailpiece or trap assembly that is designed to connect to a supply tube that drains to the floor drain trap inlet.

SPS 382.41(4)(o)2. 2. Ballcock trap seal primer shall be used in conjunction with anti-siphon fill valves complying with ASSE 1002.

SPS 382.41(4)(o)3. 3. Flushometer tailpiece or trap seal primers shall only be used in conjunction with a flushometer complying with ASSE 1037 and shall be installed below the critical level of the vacuum breaker if a vacuum breaker is used.

SPS 382.41(5) (5) Installation.

SPS 382.41(5)(a) (a) An air gap for cross connection control shall conform to ASME A112.1.2.

SPS 382.41 Note Note: See ch. SPS 382 Appendix for further explanatory material.

SPS 382.41(5)(b) (b) Cross connection control methods, devices and assemblies shall be installed in accordance with the manufacturer’s written installation specifications and this chapter. The methods, devices and assemblies shall be accessible for inspection, testing, maintenance and replacement.

SPS 382.41 Note Note: See s. SPS 384.30 (5) (c).

SPS 382.41(5)(c) (c) Cross connection control devices shall be protected from freezing.

SPS 382.41(5)(d) (d)

SPS 382.41(5)(d)1. 1. Except as provided in subd. 1m., a cross connection control device or cross connection control assembly may not be located in uninhabitable spaces susceptible to flooding.

SPS 382.41(5)(d)1m. 1m. A cross connection control device or cross connection control assembly that does not incorporate a vent port may be installed in an uninhabited location susceptible to flooding.

SPS 382.41(5)(d)2. 2. A cross connection control device which has one or more vent ports may not be located in a pit, vault or depression which is below the adjacent grade or floor level, even if the pit, vault or depression is provided with a drain at the bottom of the pit.

SPS 382.41(5)(e) (e)

SPS 382.41(5)(e)1. 1. Vent ports of cross connection control devices shall be positioned:

SPS 382.41(5)(e)1.a. a. Away from areas where toxic gases and fumes may accumulate;

SPS 382.41(5)(e)1.b. b. Downward or protected to protect the ports from falling debris; and

SPS 382.41(5)(e)1.c. c. So as to drain dry.

SPS 382.41(5)(e)2. 2. Cross connection control devices or assemblies shall be so located that any vent ports are provided with an air gap so as to comply with s. SPS 382.33 or ASME A112.1.3.

SPS 382.41(5)(e)3. 3.

SPS 382.41(5)(e)3.a. a. If a pressure vacuum breaker, reduced pressure principle backflow preventer, or a reduced pressure detector backflow preventer, is located within a building, a drain or receptor shall be provided to receive the discharge from the vent ports of the device. If a floor drain is to receive the discharge from the vent ports of a pressure vacuum breaker, reduced pressure principle backflow preventer or a reduced pressure detector backflow preventer, the flow or pathway of the discharge may not create a nuisance.

SPS 382.41(5)(e)3.b. b. Where drain piping is provided for the discharge from a vent port, an air gap in accordance with par. (a) shall be provided between the vent port and the drain piping.

SPS 382.41(5)(e)3.c. c. Where a receptor is provided for the discharge from a vent port, an air gap in accordance with par. (a) shall be provided between the vent port and the receptor.

SPS 382.41(5)(f) (f) The installation of a reduced pressure principle backflow preventer, a reduced pressure principle fire protection backflow preventer, a reduced pressure detector fire protection backflow prevention assembly, a double check backflow prevention assembly, a double check fire protection backflow prevention assembly, a double check detector fire protection backflow prevention assembly, a pressure vacuum breaker assembly, and a spill resistant vacuum beaker shall conform to all of the following limitations:

SPS 382.41(5)(f)1. 1. The minimum distance between the floor, surface or platform which is to provide access and the lowest point of the assembly may not be less than 12”.

SPS 382.41(5)(f)2. 2. The maximum distance between the floor, surface or platform which is to provide access and the lowest point of the assembly may not be more than 7 feet.