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// CODE SNIPPET

1502.8.2 Commercial, Industrial, and Institutional Occupancies

California Plumbing Code 2016 > 15 Alternate Water Sources for Nonpotable Applications > 1502.0 Gray Water Systems [BSC-CG] > 1502.8 Procedure for Estimating Gray Water Discharge > 1502.8.2 Commercial, Industrial, and Institutional Occupancies
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The Authority Having Jurisdiction may utilize the gray water discharge procedures listed below, water use records, or other documentation to estimate gray water discharge.

1502.8.2.1 Lavatories

Daily discharge from lavatories may be determined by the following equation:

(Equation 15.1)
Occupants X lavatory flow rate X 3

Where:
The number of occupants = square footage of the building divided by the occupant load factor from the California Plumbing Code Chapter 4, Table A.

Lavatory fixture flow rate, new construction = That from the California Green Building Standards (CALGreen) Code Section 5.303.2.3

Lavatory fixture flow rate, existing fixtures = Actual flow rate for existing fixtures

3 = Average number of uses per person per day

1502.8.2.2 Showers

Daily gray water discharge from showers may be determined by the following equation:
(Equation 15.2)
Number of daily uses X shower flow rate X 5 minutes

1502.8.2.3 Commercial Clothes Washers

Daily gray water discharge from commercial clothes washers may be determined by the following equation:

(Equation 15.3)
Cubic feet of capacity X Water Factor X 6

Where:
Water Factor = Gallons per cubic foot
6 = Average number of uses per day

Note: Cubic feet of capacity and Water Factor are contained in product specifications or are available from the washer manufacturer.

Related Code Sections


1502.8.2 Alternate Water Sources for Nonpotable Applications, Commercial, Industrial, and Institutional Occupancies
lavatories may be determined by the following equation: (Equation 15.1) Occupants X lavatory flow rate X 3 Where: The number ...
California Plumbing Code 2016 > 15 Alternate Water Sources for Nonpotable Applications > 1502.0 Gray Water Systems [BSC-CG] > 1502.8 Procedure for Estimating Gray Water Discharge > 1502.8.2 Commercial, Industrial, and Institutional Occupancies
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A sign shall be installed in restrooms in commercial, industrial, and institutional occupancies, and in residential common use areas using ...
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A sign shall be installed in restrooms in commercial, industrial, and institutional occupancies, and in residential common use areas using on-site ...
California Plumbing Code 2016 > 15 Alternate Water Sources for Nonpotable Applications > 1501.0 General > 1501.10 Signage [BSC-CG, HCD 1, HCD 2, HCD 1-AC, & DWR] > 1501.10.1 Commercial, Industrial, Institutional, and Residential Restroom Signs
1503.12.1 Alternate Water Sources for Nonpotable Applications, Commercial, Industrial, Institutional, and Residential Restroom Signs
A sign shall be installed in each restroom of commercial, industrial, and institutional occupancies, and in residential common use areas using ...
California Plumbing Code 2016 > 15 Alternate Water Sources for Nonpotable Applications > 1503.0 Recycled Water Supply Systems in Buildings > 1503.12 Signage > 1503.12.1 Commercial, Industrial, Institutional, and Residential Restroom Signs
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