Policies, Rules & Rates : Calculation of Living Unit Equivalents

Calculation of Living Unit Equivalents

CALCULATION OF LIVING UNIT EQUIVALENTS:

For purposes of this Rate and Fee Schedule, the calculation of LUEs shall be determined as follows:

  1. Definition:  A living unit equivalent (LUE) is defined as the typical flow that would be produced by a single family residence (SFR) located in a typical subdivision. For water, this includes consumptive uses such as lawn watering and evaporative coolers. The wastewater system does not receive all of these flows, so the expected flows per LUE differ for water and wastewater.

     

    ONE LUE produces: 2.2 gallons per minute (GPM) in a Peak Hour of water flow

    1. GPM in a Peak Day of water flow

            0.33 GPM on an average basis year round

            270 GPD average dry weather wastewater flow.

  2. LUEs shall be determined in accordance with the following AWWA meter equivalent recommendations as follows:

                               

Meter Type

Meter Size

Continuous Duty Maximum Rate (gpm)

Ratio to 5/8” Meter

 

AWWA Standards C700, C701, C702, C703

Simple

5/8”

10

1.0

Simple

3/4"

15

1.5

Simple

1”

25

2.5

Simple

1 -1/2”

50

5.0

Simple

2”

80

8.0

Compound

2”

80

8.0

Turbine

2”

100

10.0

Compound

3”

160

16.0

Turbine

3”

240

24.0

Compound

4”

250

25.0

Turbine

4”

420

42.0

Compound

6”

500

50.0

Turbine

6”

920

92.0

Compound

8”

800

80

Turbine

8”

1600

160.0

Compound

10”

1150

115.0

Turbine

10”

2500

250.0

Turbine

12”

3300

330.0