D.C. Mun. Regs. tit. 12, r. 12-B2903

Current through Register Vol. 71, No. 44, November 1, 2024

Rule 12-B2903 - WATER-SUPPLY SYSTEM

Strike Table P2903.2 of the International Residential Code in its entirety and insert new Table P2903.2 in the Residential Code in its place to read as follows:

TABLE P2903.2

MAXIMUM FLOW RATES AND CONSUMPTION FOR PLUMBING FIXTURES AND FIXTURE FITTINGS^b

PLUMBING FIXTURE OR FIXTURE FITTING	MAXIMUM FLOW RATE OR QUANTITY
Lavatory faucet and bar sink faucet	1.5 gpm at 60 psi and WaterSense labeled
Shower head^a	2.0 gpm at 80 psi and WaterSense labeled
Sink faucet, kitchen	2.2 gpm at 60 psi
Water closet, tank type^c	1.28 gallons per flushing cycle and WaterSense labeled
Water closet, flushometer type	1.28 gallons per flushing cycle

For SI: 1 gallon per minute = 3.785 L/m,

1 pound per square inch = 6.895 kPa

a. A handheld shower spray is also a shower head.

b. Consumption tolerances shall be determined from referenced standards.

c. Dual Flush Toilets - The effective flush volume shall not exceed 1.28 gallons (4.8 liters). The effective flush volume is defined as the composite, average flush volume of two reduced flushes and one full flush. Flush volumes will be tested in accordance with ASME A112.19.2 and ASME A112.19.14.

D.C. Mun. Regs. tit. 12, r. 12-B2903

Final Rulemaking published at 67 DCR 5679 (5/29/2020)