WSSC’s rates are based on a customers' average daily consumption (ADC). As your consumption increases, like during dry conditions, your rates will also increase.
|Hose Size||LBS. Pressure Per Sq Inch||Time||Gallons Used|
|1/2 Inch||60||1 Hour||630|
|5/8 Inch||60||1 Hour||1,020|
|3/4 Inch||60||1 Hour||1,860|
|Product||Duration||Frequency||Gallons Per Month|
|Irrigation System||15 min (with 8 zones)||2 times/week||15,360|
|Sprinkler||1 hour||3 times/week||12,240|
On average a pop-up station (irrigation system) uses approximately 16 gallons per minute (GPM). Here is an example of how to calculate how much water is being used per month:
Number of Minutes x Number of Stations/Zones = Total Minutes
Total Minutes x Gallons per minute = Total Gallons used per watering cycle
Total Gallons per cycle x Number of days per month you water = Total gallons used per month
If your system has 8 stations, you water twice a week, and each station runs for 15 minutes, then you are using 1,920 gallons per day you water, or 15,360 gallons per month.
Running a typical sprinkler from a standard garden hose (5/8”) for one hour uses about 1,020 gallons of water; if you run it three times per week, that is about 12,240 gallons per month. If you run the sprinkler three times a week during a 90-day billing cycle, you will add about 36,000 gallons of water to your usage.
|Toilet Flushing||2.6 gallons per flush*|
|Shower (water running)||28.1 gallons per day|
|Bath (full tub)||3.6 gallons per day|
|Laundry Machine||31 gallons per load|
|Dishwasher||6.1 gallons per load|
|Faucet||26.3 gallons per day|
|Brushing Teeth||10 gallons (tap running) per use|
|Washing Hands||2 gallons (tap running) per use|
|28.1 gallons per day|
* The rate of consumption for water-saving devices or products significantly varies. Please check the plumbing fixture package to determine the merchandise's efficiency.
** AVERAGE CONSUMPTION PER DAY PER PERSON = 55 GALLONS
Water Research Foundation. (2016, April). Residential End Uses of Water, Version 2. Retrieved from Water Research Foundation: http://www.waterrf.org/PublicReportLibrary/4309A.pdf