Availability Charge Sample Calculation

Availability Charge Rates (effective January 1, 2020):

  • Water: $12.80 per gallon (max day usage)
  • Sewer: $31.06 per gallon (average day usage)

Consumption Usage Rates (effective January 1, 2020):

  • Water: $3.44 per thousand gallons (Tier 1)
                $5.92 per thousand gallons (Tier 2)

  • Sewer: $5.14 per thousand gallons
  • Reclaimed Water: $1.61 per thousand gallons

EXAMPLE:
Assumptions:

  • 100,000 SF data center
  • Cooling tower use: maximum daily water usage = approx. 100,000 gallons
  • Average day sewer is 20% of max day water = 20,000 gallons
 
Without Reclaimed Water:

One time availability charge
Water (Cooling Towers): 100,000 gallons x $12.80/gallon = $1,280,000
Sewer (Cooling Towers): 20,000 gallons x $31.06/gallon = $621,200

TOTAL: $1,901,200

With Reclaimed Water:

One time availability charge
Water (Cooling Towers): 100,000 gallons x $12.80/gallon x 10%= $128,000
Sewer (Cooling Towers): 20,000 gallons x $31.06/gallon = $621,200

TOTAL: $749,200

Annual Consumption Savings with Reclaimed Water for Cooling
50,000 gpd average x 365 days x ($3.44 - $1.61) / 1,000 gallons = $33,397.50