Note: Chapter NR 811 governs the design and construction of community water systems or waterworks.
Note: The exception of providing hot water under subds. 1. to 3. does not supersede the requirements of other state agencies for providing hot water.
Note: When identifying potable water piping or valves with tags or bands, label according to Table 382.40-1a.
Wisconsin Department of Safety and Professional Services Identification/Object Number _________ Cross Connection Control Assembly Do Not Remove This Tag |
Note: 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.
Note: 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.
Note: See ch. SPS 382 Appendix A-382.40 (4) for further explanatory material.
Note: See ch. SPS 382 Appendix for further explanatory material.
Note: See sub. (8) (d) 3. for the requirements relating to the bypassing of water meters.
Note: See sub. (8) (g) for the valve requirements for water temperature control.
Note: See sub. (8) (d) 3. for the requirements relating to the bypassing of water meters.
Note: See A-382.40 (5) for pipe insulation requirements.
Note: Insulation requirements for these systems are found in s. SPS 322.44 (2) and chs. SPS 361 to 366.
Note: Water heaters are to be installed in accordance with the requirements specified in chs. SPS 361 to 366 and chs. SPS 320 to 325 with respect to energy efficiency, enclosures and venting.
Note: The temperature steam rating of a combination temperature and pressure relief valve is commonly referred to as the AGA temperature steam rating.
Table 382.40-1a
Distribution and Service
Supply | Tag and Band Color | Tag Shape | Tag Size | Tag Legenda |
Potable | Green | Round | 3" diameter | Safe Water |
Nonpotable | Yellow | Triangle | 4" sides | Nonpotable Water or Not Safe for Drinking |
Reuse (Nonpotable) | Purple | Triangle | 4" sides | Nonpotable Water or Not Safe for Drinking or Specific Useb |
Device Specificc | Gray | Triangle | 4" sides | Specific Useb |
aAll nonpotable water outlets shall be identified at the point of use for each outlet with the following legends or as otherwise approved by the department.
b Tag should reflect the intended use.
cServing an individual or similar plumbing fixtures or appliances.
Table 382.40-1b
Water Supply Fixture Units for Nonpublic Use Fixtures
Type of Fixturea | Water Supply Fixture Units (wsfu) | ||
Hot | Cold | Total | |
Automatic Clothes Washer | 1.0 | 1.0 | 1.5 |
Bar Sink | 0.5 | 0.5 | 1.0 |
Bathtub, with or without Shower Head | 1.5 | 1.5 | 2.0 |
Bidet | 1.0 | 1.0 | 1.5 |
Dishwashing Machine | 1.0 | 1.0 | |
Glass Filler | 0.5 | 0.5 | |
Hose Bibb: | |||
1/2" diameter 3/4" diameter | 3.0 4.0 | 3.0 4.0 | |
Kitchen Sink | 1.0 | 1.0 | 1.5 |
Laundry Tray, 1 or 2 Compartment | 1.0 | 1.0 | 1.5 |
Lavatory | 0.5 | 0.5 | 1.0 |
Manufactured Home | -- | 15 | 15 |
Shower, Per Head | 1.0 | 1.0 | 1.5 |
Water Closet, Flushometer Type | 6.0 | 6.0 | |
Water Closet, Gravity Type Flush Tank | 2.0 | 2.0 | |
Bathroom Groups: | |||
Bathtub, Lavatory and Water Closet-FMb | 2.0 | 7.5 | 8.0 |
Bathtub, Lavatory and Water Closet-FTc | 2.0 | 3.5 | 4.0 |
Shower Stall, Lavatory and Water Closet-FM | 1.5 | 7.0 | 7.5 |
Shower Stall, Lavatory and Water Closet-FT | 1.5 | 3.0 | 3.5 |
a For fixtures not listed, factors may be assumed by comparing the fixture to a listed fixture which uses water in similar quantities and at similar rates.
b FM means flushometer type.
c FT means flush tank type.
Table 382.40-1d
Piping Volume and Maximum Piping Length
Nominal Pipe Size (in inches) | Volume (liquid ounces per foot length) | Maximum Pipe Length (in feet) | |
Public lavatory faucets | Other fixtures and appliances | ||
1/4 | 0.33 | 24 | 25 |
5/16 | 0.5 | 16 | 25 |
3/8 | 0.75 | 12.5 | 25 |
1/2 | 1.5 | 6 | 25 |
5/8 | 2 | 4 | 25 |
3/4 | 3 | 2 | 25 |
7/8 | 4 | 0.5 | 25 |
1 | 5 | 0.5 | 25 |
1 1/4 | 8 | 0.5 | 25 |
1 1/2 | 11 | 0.5 | 25 |
2 or larger | 18 | 0.5 | 25 |
Table 382.40-1h
Ounces of Water per Foot of Tube
Nominal Size (inches) | Copper Type M | Copper Type L | Copper Type K | CPVC CTS SDR 11 | CPV-C SCH 40 | CPV-C SCH 80 | PE-R-T SDR 9 | Composite ASTM F1281 | PEX CTS SDR 9 |
3/8 | 1.06 | 0.97 | 0.84 | N/A | 1.17 | - | 0.64 | 0.63 | 0.64 |
1/2 | 1.69 | 1.55 | 1.45 | 1.25 | 1.89 | 1.46 | 1.18 | 1.31 | 1.18 |
3/4 | 3.43 | 3.22 | 2.90 | 2.67 | 3.38 | 2.74 | 2.35 | 3.39 | 2.35 |
Note: See appendix for further explanatory information and examples.
Table 382.40-2
Water Supply Fixture Units for Public Use Fixtures
Type of Fixturea | Water Supply Fixture Units (wsfu) | ||
Hot | Cold | Total | |
Automatic Clothes Washer, Individual Commercial Type | 2.0 | 2.0 | 3.0 |
Automatic Clothes Washer, Large Capacity Commercial Type | b | b | b |
Automatic Clothes Washer, Individual Residential Type | 1.0 | 1.0 | 1.5 |
Autopsy Table | 2.0 | 2.0 | 3.0 |
Bathtub, With or Without Shower Head | 2.0 | 2.0 | 3.0 |
Coffeemaker | 0.5 | 0.5 | |
Dishwasher, Commercial | b | b | b |
Drink Dispenser | 0.5 | 0.5 | |
Drinking Fountain | 0.25 | 0.25 | |
Glass Filler | 0.5 | 0.5 | |
Health Care Fixtures: | |||
Clinic sink | 2.0 | 7.0 | 7.0 |
Exam/treatment sink | 0.5 | 0.5 | 1.0 |
Sitz bath | 1.5 | 1.5 | 2.0 |
Surgeon washup | 1.5 | 1.5 | 2.0 |
Hose Bibb: | |||
1/2" diameter | 3.0 | 3.0 | |
3/4" diameter | 4.0 | 4.0 | |
Icemaker | 0.5 | 0.5 | |
Lavatory | 0.5 | 0.5 | 1.0 |
Shower, Per Head | 2.0 | 2.0 | 3.0 |
Sinks: | |||
Bar and Fountain | 1.5 | 1.5 | 2.0 |
Barber and Shampoo | 1.5 | 1.5 | 2.0 |
Cup | 0.5 | 0.5 | |
Flushing Rim | 7.0 | 7.0 | |
Kitchen and Food Preparation per faucet | 2.0 | 2.0 | 3.0 |
Laboratory | 1.0 | 1.0 | 1.5 |
Service sink | 2.0 | 2.0 | 3.0 |
Urinal: | |||
Syphon Jet | 4.0 | 4.0 | |
Washdown | 2.0 | 2.0 | |
Wall Hydrant, Hot and Cold Mix: | |||
1/2" diameter | 2.0 | 2.0 | 3.0 |
3/4" diameter | 3.0 | 3.0 | 4.0 |
Wash Fountain: | |||
Semicircular | 1.5 | 1.5 | 2.0 |
Circular | 2.0 | 2.0 | 3.0 |
Water Closet: | |||
Flushometer | 6.5 | 6.5 | |
Gravity Type Flush Tank | 3.0 | 3.0 |
a For fixtures not listed, factors may be assumed by comparing the fixture to a listed fixture which uses water in similar quantities and at similar rates.
b Load factors in gallons per minute, gpm, based on manufacturer's requirements.
Table 382.40-3
Conversion of Water Supply Fixture Units to Gallons Per Minute
Water Supply Fixture Units | Gallons per Minute | |
Predominately Flush-ometer Type Water Closets or Syphon Jet Urinals | Predominately Flush Tank Type Water Closets or Washdown Urinals | |
1 | - | 1 |
2 | - | 2 |
3 | - | 3 |
4 | 10 | 4 |
5 | 15 | 4.5 |
6 | 18 | 5 |
7 | 21 | 6 |
8 | 24 | 6.5 |
9 | 26 | 7 |
10 | 27 | 8 |
20 | 35 | 14 |
30 | 40 | 20 |
40 | 46 | 24 |
50 | 51 | 28 |
60 | 54 | 32 |
70 | 58 | 35 |
80 | 62 | 38 |
90 | 65 | 41 |
100 | 68 | 42 |
120 | 73 | 48 |
140 | 78 | 53 |
160 | 83 | 57 |
180 | 87 | 61 |
200 | 92 | 65 |
250 | 101 | 75 |
300 | 110 | 85 |
400 | 126 | 105 |
500 | 142 | 125 |
600 | 157 | 143 |
700 | 170 | 161 |
800 | 183 | 178 |
900 | 197 | 195 |
1000 | 208 | 208 |
1250 | 240 | 240 |
1500 | 267 | 267 |
1750 | 294 | 294 |
2000 | 321 | 321 |
2250 | 348 | 348 |
2500 | 375 | 375 |
2750 | 402 | 402 |
3000 | 432 | 432 |
4000 | 525 | 525 |
5000 | 593 | 593 |
Note: Values not specified in the table may be calculated by interpolation.
Table 382.40-3e
Conversion of Water Supply Fixture Units to Gallons Per Minute for Water Treatment Devicesa Serving an Individual Dwellingb
Water Supply Fixture Units (WSFUs) | Gallons Per Minute (GPM) |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 4 |
5 | 4.5 |
6 | 5 |
7 | 6 |
8 | 6.5 |
25 | 7 |
35 | 8 |
40 | 9 |
a Treatment devices providing treatment for compliance with Table 382.70-1 shall use Table 382.40-3 for conversion.
b Table shall not be used for converting hose bibb, high flow fixture or hydrant wsfu.
Note: See appendix for details for alternative methods for sizing of the water supply piping of one- and 2-family and apartment buildings.
Note: See ch. SPS 382 Appendix for further explanatory material.
Note: See ch. SPS 382 Appendix for further explanatory material.
Note: See s. SPS 382.41 (4) (m) relative to cross connection control devices.
Note: The Department of Natural Resources has limitations for the separation of water mains and sanitary sewers.
Note: See ch. SPS 382 Appendix A-382.30 (11) (d) for setback distance from yard hydrant to well.
Note: See ch. SPS 383 Table 383.43-1 for setback distances to POWTS components.
Note: See ch. SPS 382 appendix for further explanatory information.
Note: For information on sample valve requirements see s. NR 812.34(2).
Note: The installation of two water services or a private water main may require the installation of a check valve. Refer to ch. NR 811 for more information.
Note: See s. SPS 384.30 (1) regarding the bending of pipe and protection from puncture.
Note: See ch. SPS 382 Appendix for further explanatory material. Section NR 812.08 may require additional setbacks.
Wis. Admin. Code Department of Safety and Professional Services § SPS 382.40