LEED v5 BD+C Rating System_November 2025_clean - Page 063
Extracted Content
Projects located where standard supply pressure is different than the LEED baseline supply pressure may calculate the water consumption of flow fixtures and fittings at the local standard supply pressure.
OPTION 1. PRESCRIPTIVE PATH — MAXIMUM FLUSH AND FLOW RATES
For all new and existing fixtures and fittings within the project boundary, do not exceed the maximum flush and flow rates listed in Table 1.
Table 1. Maximum Installed Flush or Flow Rates for Prescriptive Path
| Fixture or Fitting | Maximum Installed Flush or Flow Rate (IP) | Maximum Installed Flush or Flow Rate (SI) |
|---|---|---|
| Toilet (water closet)a | 1.28 gpfb | 4.8 lpf b |
Urinala | 0.50 gpf | 1.9 lpf |
Public lavatory (restroom) faucet | 0.50 gpm | 1.9 lpm |
Private lavatory faucetsa | 1.50 gpm | 5.7 lpm |
Kitchen faucet | 1.8 gpm | 6.8 lpm |
Showerheada | 2.00 gpm | 7.6 lpm |
NOTE: gpf = gallons per flush; gpm = gallons per minute; lpf = liters per flush; lpm = liters per minute.
aThe WaterSense label is available for this fixture type. WaterSense-labeled fixtures are recommended for projects located in the U.S. and Canada.
bFor dual-flush toilets, the full-flush volume shall be equal to or fewer than 1.28 gpf/4.8 lpf; A weighted average cannot be used.
OR
OPTION 2. PERFORMANCE PATH—CALCULATED REDUCTION
For all new and existing fixtures and fittings within the project boundary, reduce aggregate water consumption by 20% from the baseline listed in Table 2.
Table 2. Baseline water consumption of fixtures and fittings
| Fixture or Fitting | Baseline Installed Flush or Flow Rate (IP) | Baseline Installed Flush or Flow Rate (SI) |
|---|---|---|
| Toilet (water closet) a | 1.6 gpf b | 6.0 lpf b |
Urinal a | 1.0 gpf | 3.8 lpf |
Public lavatory (restroom) faucet | 0.50 gpm at 60 psi | 1.9 lpm at 415 kPa |
Private lavatory faucets a | 2.2 gpm at 60 psi | 8.3 lpm at 415 kPa |
Kitchen faucet | 2.2 gpm at 60 psi | 8.3 lpm at 415 kPa |
Showerhead a | 2.5 gpm at 80 psi per shower stall | 9.5 lpm at 550 kPa per shower stall |
NOTE: gpf = gallons per flush; gpm = gallons per minute; psi = pounds per square inch; lpf = liters per flush; lpm = liters per minute; kPa = kilopascals .
aThe WaterSense label is available for this fixture type. WaterSense-labeled fixtures are recommended for projects located in the U.S. and Canada.
bFor dual-flush toilets, the full-flush volume shall be equal to or fewer than 1.28 gpf/4.8 lpf; A weighted average cannot be used.
AND
U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, November 2025 Edition 56