Water Allocation Calculator

Complete the form fields below and click “Calculate” to estimate your variable water charge.

Please Fill out the following fields below:
Estimated HCF (Hundred cubic ft.)
Estimated HCF must be 1 or greater
Persons Per Household
Persons Per House must be 1 or greater and less than or equal to 20
Landscape Area (Sq.ft.)
Landscape Area must be 0 or greater and less than or equal to 999,999

Amount of Water and Month

Estimated HCF
(Hundred cubic ft.)
Consumption Month

Tier 1 Indoor Allocation

Persons
Per household
Did you know? The District can adjust your water allocation depending on the number of people living in your residence. If you have more than 4 occupants, you can submit this form.
multiply
{{ gallonsPerDay }} gallons
Per person, per day
multiply
{{ daysInCycle }} days
Average billing cycle*
divide
{{ gallonsConversionFactor }} gallons
Conversion factor for gallons to billing units (HCF)

Tier 2 Outdoor Allocation

Landscape Area
(Sq.ft.)
multiply
{{ eto }}
EvapoTranspiration (Eto) Rate*
multiply
{{ plantFactor }}
Monthly Plant Factor*
multiply
{{ inchesToGallons }}
Sq. Ft. to Gallons Conversion Factor
divide
{{ gallonsConversionFactor }} gallons
Conversion factor for gallons to billing units (HCF)

Allocated vs. Estimated

TierRateAllocated (HCF)Estimated (HCF)Variable Water Charge
Tier 1
Indoor Allocation
Rate
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Allocated (HCF)
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Estimated (HCF)
{{ t1Estimate ? t1Estimate : '-' }}
Variable Water Charge
{{ t1Estimate ? toUsd(t1Charge) : '-' }}
Tier 2
Outdoor Allocation
Rate
{{ toUsd(t2Rate) }}
Allocated (HCF)
{{ t2Allocated ? t2Allocated : '-' }}
Estimated (HCF)
{{ t2Estimate ? t2Estimate : '-' }}
Variable Water Charge
{{ t2Estimate ? toUsd(t2Charge) : '-' }}
Tier 3
Inefficient Use
Rate
{{ toUsd(t3Rate) }}
Allocated (HCF)
-
Estimated (HCF)
{{ t3Estimate ? t3Estimate : '-' }}
Variable Water Charge
{{ t3Estimate ? toUsd(t3Charge) : '-' }}
Estimated Water Use Charges
Allocated (HCF)
{{ t1Allocated ? t1Allocated + t2Allocated : '-' }}
Estimated (HCF)
{{ t1Estimate ? estimatedHcf : '-' }}
Variable Water Charge
{{ t1Estimate ? toUsd(totalCharge) : '-' }}
Water System Charge and Monthly Wastewater Charges

Within your bill’s total monthly costs, you may see a Water System charge and Wastewater Services charge. Water System charges help pay for the cost associated with operating and maintaining the District’s water treatment and delivery system. This fee includes fixed meter charges that remain the same every month, which are determined by meter size, not by the amount of water delivered. Wastewater Services charges pay for the cost associated with operating and maintaining wastewater lines and the treatment of wastewater flows. Learn more

As a government agency, East Valley Water District is required by law to only charge its customers the costs associated with providing water services.
*The number of days in the billing cycle can vary throughout the year. Actual ETo Rate and Monthly Plant Factor are calculated at time of billing using current weather data.

Water Vocabulary

What is HCF?

HCF stands for "Hundred Cubic Feet". Every 748 gallons of measured consumption through a water meter represents a HCF. The actual number of HCF used by each household is printed on your monthly utility bill.

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Water Vocabulary

Persons Per Household

Indoor allocations are based upon the number of individuals in each household and East Valley Water District automatically allocates four individuals per home. If more individuals reside in your household, please submit a Variance Request and we can provide an expanded water allocation.

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Water Vocabulary

Daily Gallons Allocation

Indoor budget allocations are developed based on indoor water use standards adopted by the California Regional Water Quality Control Board. Currently, the Tier 1 budget includes 55 gallons per person per day of water usage consistent with State Guidelines.

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Water Vocabulary

Monthly Billing Cycle

Some billing periods are longer than others, depending on the length of the month. East Valley Water District expands your water allocation for billing periods with more days. The average number of days per bill cycle is 28 days, as used in this calculator.

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Water Vocabulary

EvapoTranspiration Rate

Rate at which water evaporates from the soil surface and transpires from plants.

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Water Vocabulary

Monthly Plant Factor

Estimate of water required for a plant type to grow.

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Water Vocabulary

Allocated HCF

Based on the number of occupants and landscape area, this is the amount of water you should be using during the month to stay efficient indoors and out.

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