Water Consumption and Leak Facts


By installing more efficient water fixtures and regularly checking for leaks, households can reduce daily indoor per capita water use by about 35% to about 45.2 gallons per day:


  • Hand washing uses approximately 2 gallons per minute (GPM)
  • A High Efficiency Dish Washer uses between 4 to 6 gallons per load. You can consume up to 35 percent less water by doing a full load of dishes, which have not been pre-rinsed, in your dishwasher instead of by hand


  • High efficiency toilets use 1.28 gallons per flush or less, non-efficient toilets use up to 5 gallons per flush
  • A silent toilet leak can be as small as 30 gallons per day (GPD). Larger leaks can be up to 6 gallons per min, equivalent to 11 billing units (BU) per day
  • High efficiency shower heads use 2 GPM, or 20 gallons for a 10 minute shower. Non-efficient shower heads use up to 12 GPM, or 120 gallons for a 10 minute shower, equal to the daily allocation of 2 people


  • High efficiency clothes washers use an average of 8 gallons per load, standard washing machines use up to 40 gallons per load


  • Typical residential sprinkler systems with Pop-Up Spray Heads will use approximately 2 GPM, per head. To estimate consumption, multiply the number of heads by 2, then by the minutes (Run Time) This will give you the approximate gallons used per cycle
  • A broken main or lateral line 1” or smaller will waste between 1,200 to over 3,000 gallons per hour


  • Medical Needs, Irrigated Landscape Area, New Irrigated Landscape Area, and Other Instances are processed by the conservation department

Common Leaks
In Gallons per Minute (GPM)

  • Dripping Faucet: .007-.14 GPM
  • Flowing Faucet: .5 GPM to 6 GPM
  • Leaking/Running Toilet: .1 GPM to 6 GPM
  • Broken Sprinkler: 5 GPM to 20 GPM
  • Concealed Leaks/Broken Mainline: .1 GPM to 20 GPM

In Gallons per Day (GPD)

  • Dripping Faucet: 10 GPD to 200 GPD
  • Flowing Faucet: 720 GPD to 8,640 GPD
  • Leaking/Running Toilet: 144 GPD to 8,640 GPD
  • Broken Sprinkler: 7,200 GPD to 28,800 GPD
  • Concealed Leaks/Broken Mainline: 720 GPD to 28,800 GPD

In Billing Units (BU) based on 24 hours a day for 30 days of flow

  • Dripping Faucet: .4 BU to 8 BU
  • Flowing Faucet: 28 BU to 346 BU
  • Leaking/Running Toilet: 5 BU to 346 BU
  • Broken Sprinkler: 288 BU to 1155 BU
  • Concealed Leaks/Broken Mainline: 28 BU to 1155 BU