Table 610.3 is hereby deleted in its entirety and the following provisions shall be substituted therefor:

Table 610.3

Water Supply Fixture Units (WSFU) and Minimum Fixture Branch Pipe Sizes³

APPLIANCES, APPURTENANCES OR FIXTURES2	MINIMUM FIXTURE BRANCH PIPE SIZE1,4	PRIVATE	PUBLIC	ASSEMBLY6
Bathtub or Combination Bath/Shower (fill)	1/2"	4.0	4.0
3/4" Bathtub Fill Valve	3/4"	10.0	10.0
Bidet	1/2"	1.0
Clothes Washer, each pair of faucets	1/2"	2.0	4.0
Dental Unit, cuspidor	1/2"		1.0
Dishwasher, domestic	1/2"	1.5	1.5
Drinking Fountain or Watercooler	1/2"	0.5	0.5	0.75
Hose Bibb	1/2"	2.5	2.5
Hose Bibb, each additional8	1/2"	1.0	1.0
Lavatory	1/2"	1.0	1.0	1.0
Lawn Sprinkler, each head	See footnotes 5 and 9	See footnote 5 and 9
Mobile Home, each (minimum)		12.0
SINKS
Bar	1/2"	1.0	2.0
Clinic Faucet	1/2"		3.0
Clinic Flushometer Valve with or without faucet	1"		8.0
Kitchen, Domestic with or without dishwasher	1/2"	1.5	1.5
Laundry	1/2"	1.5	1.5
Service or Mop Basin	1/2"	1.5	3.0
Washup, each set of faucets	1/2"		2.0
Shower, per head	1/2"	2.0	2.0
Urinal, 1.0 GPF Flushometer Valve	3/4"	See footnote 7
Urinal, greater than 1.0 GPF Flushometer Valve	3/4"	See footnote 7
Urinal, flush tank	1/2"	2.0	2.0	3.0
Washfountain, circular spray	3/4"		4.0
Water Closet, 1.6 GPF Gravity Tank	1/2"	2.5	2.5	3.5
Water Closet, 1.6 GPF Flushometer Tank	1/2"	2.5	2.5	3.5
Water Closet, 1.6 GPF Flushometer Valve	1"	See footnote 7
Water Closet, greater than 1.6 GPF Gravity Tank	1/2"	3.0	5.5	7.0
Water Closet, greater than 1.6 GPF Flushometer Valve	1"	See footnote 7

Notes:

1Size of the cold branch pipe, or both the hot and cold branch pipes.

2Appliances, Appurtenances or Fixtures not included in this Table may be sized by reference to the fixtures having a similar flow rate and frequency of use.

3The listed fixture unit values represent their load on their cold water supply. The separate cold water and hot water fixture unit valve for fixtures having both hot and cold water connections may each be taken as three-quarter (3/4) of the listed total value of the fixture.

4The listed minimum supply branch pipe sizes for individual fixtures are the nominal (I.D.) pipe size.

5For fixtures or supply connections likely to impose continuous flow demands, determine the required flow in gallons per minute (GPM), and add it separately to the demand (in GPM) for the distribution system or portions thereof.

6Assembly Public Use (See Table 422.1).

7When sizing flushometer systems, see Section 610.10.

8Reduced fixture unit loading for additional hose bibbs is to be used only when sizing total building demand and for pipe sizing when more than one hose bibb is supplied by a segment of water-distributing pipe. The fixture branch to each hose bibb shall be sized on the basis of 2.5 fixture units.

9The water supply for lawn sprinkler/irrigation system shall be sized by the total gallons per minute (GPM) required on the largest zone using Appendix A. The size of the water service for structures adding a lawn irrigation/sprinkler system shall be calculated by adding the total gallons per minute flow required for the largest zone on the lawn irrigation/sprinkler system to the total gallons per minute flow for the structure. Size of the service shall be determined by utilizing all applicable requirements found in Appendix A and/or Chapter 6.