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(Amended by Ord. No. 186,488, Eff. 12/27/19.)
1. For each individual leased, rented, or other tenant space within the building projected to consume more than 100 gallons per day (380 L/day).
2. Where potable water is used for industrial/process uses, for water supplied to the following subsystems:
a. Makeup water for cooling towers where flow through is greater than 500 gpm (30 L/s).
b. Makeup water for evaporative coolers greater than 6 gpm (0.04 L/s).
c. Steam and hot-water boilers with energy input more than 500,000 Btu/h (147 kW).
3. For each building that uses more than 100 gallons per day on a parcel containing multiple buildings.
99.05.303.2. Water Use Reduction. Each building shall demonstrate a 20% overall reduction in potable water use. The reduction shall be based on the maximum allowable water use per plumbing fixture and fittings as required by the LAMC. To comply with this subsection, a calculation demonstrating a 20% reduction in the building "water use baseline", as established in LAMC Table 99.05.303.2.2, shall be provided.
EXCEPTIONS:
1. Projects with plumbing systems having fixtures and fittings that comply with the maximum flow rate values shown in LAMC Table 99.05.303.2.3.
2. Additions and alterations to buildings with fixtures and fittings complying with the maximum flow rate values shown in LAMC Table 99.05.303.2.3. This provision shall apply only to new fixtures.
3. Buildings utilizing recycled water in accordance with LAMC Subsection 99.05.305.2.
4. Replacement of plumbing fixtures and fittings.
FIXTURE TYPE | BASELINE FLOW RATE | DURATION | DAILY USES | OCCUPANTS 2 |
Showerheads | 1.8 gpm @ 80 psi | 5 min. | 1 | X 2a |
Lavatory Faucets, Non-Residential | 0.5 gpm @ 60 psi | .25 min. | 3 | X |
Kitchen Faucets | 1.8 gpm @ 60 psi | 4 min. | 1 | X 2b |
Metering Faucets | 0.20 gallons/cycle | .25 min. | 3 | X |
Water Closets | 1.28 gallons/flush | 1 flush | 1 male 1 3 female | X |
Urinals | 0.125 gallons/flush | 1 flush | 2 male | X |
Fixture "Water Use" = Flow rate X Duration X Occupants X Daily uses
1. The daily use number shall be increased to three if urinals are not installed in the room.
2. Refer to Table A, 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. For example, the 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.
3. Use Worksheet WS-1 of the 2016 CALGreen Code to calculate baseline water use.
FIXTURE TYPE | MAXIMUM ALLOWABLE FLOW RATE |
Lavatory Faucets, Non-Residential* | 0.4 gpm @ 60 psi 0.20 gallons/cycle |
Kitchen Faucets** | 1.50 gpm @ 60 psi |
Dishwashers | ENERGY-STAR certified |
Clothes Washers | ENERGY-STAR certified |
* Not required if using nonwater or hybrid urinals throughout the project.
** Kitchen faucets may temporarily increase the flow to 2.2 gpm at 60 psi, and must default to 1.5 gpm at 60 psi. This requirement does not apply to a faucet in commercial kitchens.
99.05.303.6. Standards for Plumbing Fixtures and Fittings. Plumbing fixtures and fittings shall be installed in accordance with the Los Angeles Plumbing Code, and shall meet the applicable standards referenced in California Plumbing Code Table 1701.1 and in Chapter 6 of CALGreen. (Amended by Ord. No. 185,198, Eff. 11/22/17.)
(Amended by Ord. No. 184,692, Eff. 12/30/16.)
99.05.305.1. Recycled Water Supply to Fixtures. (Amended by Ord. No. 186,488, Eff. 12/27/19.) When City-recycled water is available within 200 feet of the property line, 100 percent of water for water closets, urinals, floor drains, and process cooling and heating in that building shall come from City-recycled water. Recycled water systems shall be designed and installed in accordance with the Los Angeles Plumbing Code.
EXCEPTIONS:
1. Additions that use any part of the existing plumbing system.
2. Alterations that do not include replacing all of the potable water piping.
3. Where City-recycled water quality has been deemed non-suitable for a particular fixture or equipment, connection to the City is not required. The fixture and/or equipment shall be dual-plumbed to allow for future connection.
99.05.305.2. Graywater Ready. (Amended by Ord. No. 186,488, Eff. 12/27/19.) Waste piping shall be arranged to permit the discharge from the clothes washer, bathtub, showers and bathroom/restroom washbasins to be used for a future graywater irrigation system(s). The flow from the fixtures shall be piped separately, and shall, at a minimum, be adequate to supply the irrigation demand as determined by the California Department of Water Resources' Model Water Efficiency Landscape Ordinance (MWELO). The point(s) of connection between graywater piping and other waste piping shall be accessible (as defined in LAMC Section 99.02.202) and provided with signage that is satisfactory to the Department.
EXCEPTIONS:
1. Buildings with a graywater, rainwater harvesting, or other water reuse system.
2. Sites with landscape areas not exceeding 500 square feet (46.45 m
2
).
3. Projects where graywater systems are not permitted due to geological conditions.
4. Additions and alterations that use the existing building drain.
1. Cooling towers shall have a minimum of 6 cycles of concentration (blowdown); or
2. A minimum of 50 percent of makeup water supply shall come from non-potable water sources, including treated backwash.
(Amended by Ord. No. 186,488, Eff. 12/27/19.)
99.05.408.1. Construction Waste Diversion. (Amended by Ord. No. 185,587, Eff. 7/16/18.) Comply with LAMC Section 66.32 et seq.
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