Chapter IX — BUILDING REGULATIONS›Article 9 — GREEN BUILDING CODE
Los Angeles Municipal Code Div. 8 Compliance Forms, Worksheets, and Reference Material
Los Angeles Municipal Code · 2026-10 edition · updated 2026-10-19 · Los Angeles
Cite as: Los Angeles Municipal Code Division 8 · Text as of 2026-10-19
(Title Amended by Ord. No. 184,692, Eff. 12/30/16.)
Section
99.08.100 Basic Provision.
SEC. 99.08.100. BASIC PROVISION.¶
(Amended by Ord. No. 187,719, Eff. 1/23/23.)
Chapter 8 of the California Green Building Code is not adopted, and, in lieu, Division 8, Article 9, Chapter IX of the Los Angeles Municipal Code is added as provided in this article.
WORKSHEET (WS-1) BASELINE WATER USE
(Amended by Ord. No. 188,797, Eff. 12/31/25.)
BASELINE WATER USE CALCULATION TABLE
| FIXTURE TYPE | FLOW RATE | DURATION | DAILY USES | OCCUPANTS | GALLONS PER DAY |
|---|
BASELINE WATER USE CALCULATION TABLE
| FIXTURE TYPE | FLOW RATE | DURATION | DAILY USES | OCCUPANTS | GALLONS PER DAY | ||||
|---|---|---|---|---|---|---|---|---|---|
| Showerheads, residential | 1.8 gpm @ 80 psi | x | 8 min. | x | 1 | x | Note 1a | = | |
| Showerheads, nonresidential | 1.8 gpm @ 80 psi | x | 5 min. | x | 1 | x | = | ||
| Lavatory faucets, residential | 1.2 gpm @ 60 psi | x | 0.25 min. | x | 3 | x | = | ||
| Lavatory faucets nonresidential/ |
0.5 gpm @ 60 psi | x | 0.25 min | x | 3 | x | = | ||
| Kitchen faucets | 1.8 gpm @ 60 psi | x | 4 min. | x | 1 | x | Note 1b | = | |
| Replacement aerators | 2.2 gpm | x | x | x | = | ||||
| Wash fountains | 1.8 gpm/20 [rim space (in) @ 60 psi] | x | x | x | = | ||||
| Metering faucets | 0.25 gallons/ |
x | 0.25 min. | x | 3 | x | = | ||
| Metering faucets for wash fountains | 0.20 gal/ |
x | 0.25 min. | x | x | = | |||
| Water Closets | 1.28 gallons/ |
x | 1 flush | x | 1 male 2 3 females | x | = | ||
| Urinals | 0.125 gallons/ |
x | 1 flush | x | 2 males | x | = | ||
| Total daily baseline water use (BWU) | Total daily baseline water use (BWU) | Total daily baseline water use (BWU) | Total daily baseline water use (BWU) | Total daily baseline water use (BWU) | Total daily baseline water use (BWU) | Total daily baseline water use (BWU) | Total daily baseline water use (BWU) | = |
- Refer to Table 4-1, Chapter 4 of the California Plumbing Code, for occupant load factors.
a. Shower use by occupants depends on the type of use of a building or portion of a building, e.g. total occupant load for a health club, but only a fraction of the occupants in an office building as determined by the anticipated number of users.
b. Kitchen faucet use is determined by occupant load of the area served by the fixture.
The daily use number shall be increased to three if urinals are not installed in the room.
Floor-mounted urinals @ 0.5 GPF or wall-mounted urinals @ 0.125 GPF.
WORKSHEET (WS-2) BASELINE WATER USE
(Amended by Ord. No. 188,797, Eff. 12/31/25.)
20-PERCENT REDUCTION WATER USE CALCULATION TABLE
| FIXTURE TYPE | FLOW RATE | DURATION | DAILY USES | OCCUPANTS | GALLONS PER DAY |
|---|
20-PERCENT REDUCTION WATER USE CALCULATION TABLE
| FIXTURE TYPE | FLOW RATE | DURATION | DAILY USES | OCCUPANTS | GALLONS PER DAY | ||||
|---|---|---|---|---|---|---|---|---|---|
| Showerheads, residential | x | 8 min. | x | 1 | x | Note 1a | = | ||
| Showerheads, nonresidential | x | 5 min. | x | 1 | |||||
| Lavatory faucets, residential | x | 0.25 min. | x | 3 | x | = | |||
| Lavatory faucets nonresidential/ |
x | 0.25 min | x | 3 | x | = | |||
| Kitchen faucets | x | 4 min. | x | 1 | x | Note 1b | = | ||
| Replacement aerators | x | x | x | = | |||||
| Wash fountains | x | x | x | = | |||||
| Metering faucets | x | 0.25 min. | x | 3 | = | ||||
| Metering faucets for wash fountains | x | 0.25 min. | x | x | = | ||||
| Water Closets | x | 1 flush | x | 1 male 2 3 females | x | = | |||
| Urinals | x | 1 flush | x | 2 males | x | = | |||
| Urinals Nonwater supplied | 0.0 gal/ flush | x | 1 flush | x | 2 males | x | = | 0 | |
| Proposed water use (BWU) | Proposed water use (BWU) | Proposed water use (BWU) | Proposed water use (BWU) | Proposed water use (BWU) | Proposed water use (BWU) | Proposed water use (BWU) | Proposed water use (BWU) | = | |
| 20% Reduction ______________(BWU from WS-1) x 0.80 = _____________ Allowable water use ____% Reduction __________(BWU from WS-1) x 0. = ____________ Allowable water use |
- For occupancies, refer to Table 4-1 , Chapter 4, California Plumbing Code, for occupant load factors.
a. Shower use by occupants depends on the type of use of a building or portion of a building, e.g., total occupant load for a health club, but only a fraction of the occupants in an office building as determined by the anticipated number of users.
b. Kitchen faucet use is determined by the occupant load of the area served by the fixture.
- Includes single and dual flush water closets with an effective flush of 1.28 gallons or less.
Single flush toilets - The effective flush volume shall not exceed 1.28 gallons (4.8 liters). The effective flush volume is the average flush volume when tested in accordance with ASME A112.19.2.
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.
The daily use number shall be increased to three if urinals are not installed in the room.
Where complying faucets are unavailable, aerators rated at 35 gpm or other means may be used to achieve reduction.
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