Ill. Admin. Code tit. 77, pt. 890, subpt. M, app A, tbl. M

Current through Register Vol. 49, No. 2, January 10, 2025

Table M - Load Values Assigned to Fixtures

Fixture	Occupancy	Type of Supply Control	Load Values in Water (Supply Fixture Units)
Fixture	Occupancy	Type of Supply Control	Cold	Hot	Total
Water Closet	Public/Private	Flush Valve	10	-	10
Water Closet	Public/Private	Flush Tank	3	-	3
Urinal	Public	1" Flush Valve	10	-	10
Urinal	Public	3/4" Flush Valve	5	-	5
Urinal	Public	Flush Tank	3	-	3
Lavatory	Public	Faucet	1	1	2
Bathtub	Public	Faucet	3	3	4
Shower Head	Public	Mixing Valve	2	2	3
Service Sink	Offices, etc.	Faucet	2	2	3
Kitchen Sink	Hotel/Restaur.	Faucet	3	3	4
Drinking Fountain	Office, etc.	3/8" Valve	0.25	-	0.25
Lavatory	Private	Faucet	0.75	0.75	1
Bathtub	Private	Faucet	1.5	1.5	2
Shower Stall	Private	Mixing Valve	1	1	2
Kitchen Sink	Private	Faucet	1.5	1.5	2
Laundry Trays (1 to 3)	Private	Faucet	2	2	3
Dishwashing Machine	Private	Automatic	-1	1
Laundry Machine (8 lb)	Private	Automatic	1.5	1.5	2
Laundry Machine (16 lb)	Public/ General	Automatic	3	3	4

Amended at 38 Ill. Reg. 9940, effective April 24, 2014

Agency Notes: For fixtures not listed, loads shall be assumed by comparing the fixtures to one listed using water in similar quantities and at similar rates. The assigned loads for fixtures with both cold and hot water supplies are given for separate cold and hot water loads and for total load.

Where a unit of local government or the community public water supply does not require separate water service lines for irrigation or similar systems that are likely to impose continuous demands (e.g., lawn sprinkler or air conditioning systems), the following rule applies: estimate the continuous demand (in gallons per minute) for outlets/systems separately from the intermittent demand from the fixtures listed in this table, and add this amount to the demand of the fixtures (in gallons per minute).

Fire sprinkler systems are exempt from this table.