Water conservation spans household fixtures, outdoor irrigation, buildings, public supply, agriculture, and power generation. The figures below distinguish direct use, withdrawals, consumption, modeled potential savings, observed case studies, and survey results across clearly stated populations and periods.
Key Water Conservation Statistics
These highlights summarize distinct measures from household, product, landscape, community, national, and commercial settings:
- In 2015, the average United States resident used 82 gallons of water per day at home.
- In the United States, household leaks were estimated to waste 180 gallons per household per week during the period covered by EPA’s estimate.
- EPA estimated that household leaks waste nearly 900 billion gallons nationwide each year in the United States.
- For United States households, replacing all old inefficient toilets was estimated to save 13,000 gallons per family per year.
- WaterSense showerheads were estimated to save more than 2,700 gallons of water per average family per year in the United States.
- A standard residential showerhead uses 2.5 gallons per minute, compared with no more than 2.0 gallons per minute for a WaterSense model.
- Replacing a clock-based controller with a WaterSense controller can reduce average-home irrigation use by up to 30 percent.
- Nationwide adoption of eligible WaterSense controllers was estimated to save up to 390 billion gallons per year among United States homes with automatic sprinkler systems.
- WaterSense labeled homes are designed to use at least 30 percent less water than standard new construction.
- A WaterSense labeled home could save a family of four up to 50,000 gallons and $600 annually.
- In 2024, the Oak Shade and Durango communities in Menifee, California, were estimated to save 13.5 million gallons of water annually.
- Over the past decade reported in 2024, zHome in Issaquah, Washington, used 77 percent less water than typical local homes on average.
- During water years 2010–20, modeled CONUS withdrawals for public supply, crop irrigation, and thermoelectric power averaged 244,817 million gallons per day.
- During water years 2010–20, crop irrigation represented 43 percent of the modeled withdrawals in the three-sector CONUS analysis.
- Between 2011 and 2014, Kalaloch Lodge in Forks, Washington, reduced water use by 40 percent and saved 1.4 million gallons annually.
- Over 2008–2012, Caesars Entertainment reduced water-use intensity by 17.8 percent and saved 399 million gallons across its nationwide properties.
Contents
- Household water conservation statistics: use, leaks, and everyday waste
- Water conservation data for toilets, faucets, and showerheads
- Outdoor water conservation statistics and irrigation savings
- WaterSense homes and household efficiency outcomes
- National water conservation trends across supply, irrigation, and power
- Commercial and institutional water conservation case studies
Household Water Conservation Statistics: Use, Leaks, and Everyday Waste
EPA cites USGS 2015 estimates showing that the average American used 82 gallons per person per day at home in 2015. This is household use, not a complete personal water footprint.
The same EPA source frames efficiency as a substantial opportunity, while noting that the figures are estimates rather than a single observed national average:
- Water-efficient fixtures and appliances could reduce water use by at least 20 percent for general users.
- The average United States family spends more than $1,000 per year on water costs.
- Retrofitting with WaterSense fixtures and ENERGY STAR appliances could save an average family more than $380 annually.
- Household leaks waste 180 gallons per week, or about 9,400 gallons per year, on average.
- The nationwide household leak estimate is nearly 900 billion gallons annually, equivalent to the annual household water use of nearly 11 million homes.
- Running a dishwasher only when full could save nearly 320 gallons per average family each year, assuming one fewer load per week.
- Turning off the tap while brushing teeth could save 8 gallons per day, depending on tap flow and brushing duration.
These figures describe potential behavior or retrofit savings and should not be read as measured adoption rates. The household leak comparison is a national extrapolation from average household estimates.
Source: EPA, Statistics and Facts.
Water Conservation Data for Toilets, Faucets, and Showerheads
Product standards show how conservation can be expressed as both a performance threshold and a household outcome. WaterSense-labeled products are at least 20 percent more water-efficient than average products in their categories, although performance varies by category.
| Product or action | Quantified outcome | Population or scope |
|---|---|---|
| WaterSense toilets replacing old toilets | 20%–60% less toilet water use | Residential toilet users |
| All old inefficient toilets replaced | 13,000 gallons saved per household per year | United States average family |
| Old bathroom faucets and aerators replaced | $250 saved over product lifetimes | United States average family |
| WaterSense showerhead | More than 2,700 gallons saved per household per year | United States average family |
EPA estimates that replacing old toilets with WaterSense models can reduce toilet water use by 20 to 60 percent, while replacing all old inefficient toilets could save an average family 13,000 gallons annually. The retrofit result depends on the home’s existing toilets and usage.
For bathroom faucets and aerators, EPA estimates an average family could save $250 in water and electricity over the products’ lifetimes. That is a lifetime estimate rather than a directly observed change in one year’s utility bills.
Showerhead comparisons are more specific: a standard model uses 2.5 gallons per minute, while a WaterSense model uses no more than 2.0 gallons per minute. EPA estimates that the labeled model could save more than 2,700 gallons of water, $70 in combined water and electricity costs, and 310 kilowatt-hours of electricity per average family per year; the water volume is described as equivalent to more than 88 laundry loads.
Sources: EPA, Statistics and Facts; EPA, WaterSense Accomplishments 2024; EPA, Residential Toilets.
Outdoor Water Conservation Statistics and Irrigation Savings
Outdoor irrigation can lose water through wind, evaporation, runoff, poor maintenance, or unsuitable scheduling. EPA estimates that as much as 50 percent of outdoor water use can be lost through inefficient irrigation, but this is an upper-bound estimate rather than a universal average.
- Replacing a clock-based controller with a WaterSense controller can reduce average-home irrigation water use by up to 30 percent.
- A WaterSense irrigation controller can save an average home up to 15,000 gallons annually.
- If all eligible homes with automatic sprinkler systems adopted and properly operated labeled controllers, the scenario could save up to 390 billion gallons and $4.5 billion in water costs annually nationwide.
- An improperly maintained automatic landscape irrigation system can waste up to 25,000 gallons per household annually.
- Well-managed irrigation can reduce household irrigation use by 15 percent, or nearly 7,600 gallons per household annually, when supported by professional installation or an audit and good management.
- A WaterSense soil-moisture sensor can save an average family nearly 15,000 gallons and nearly $200 in utility bills annually.
The controller and sensor figures are modeled potential outcomes, and the nationwide scenario assumes adoption and correct operation. Local utility rates, baseline irrigation, weather, and landscape conditions affect actual savings.
Sources: EPA, Statistics and Facts; EPA, The WaterSense Current: Spring 2024.
WaterSense Homes and Household Water-Efficiency Outcomes
WaterSense labeled homes are designed to use at least 30 percent less water than standard new construction. EPA estimates that a labeled home could save a family of four up to 50,000 gallons and $600 annually, but these are design and potential-savings figures rather than measured averages across every labeled home.
A 2024 EPA case study of more than 200 WaterSense homes in the Oak Shade and Durango communities in Menifee, California, estimated annual savings of 13.5 million gallons, 530,000 kilowatt-hours of energy, and nearly 331,000 pounds of carbon dioxide emissions. These are projected community outcomes associated with the design target, not long-run metered results.
The zHome community in Issaquah, Washington, offers an observed case-study comparison over the past decade reported in 2024. It used 77 percent less water on average than typical local homes, saved more than 53,000 gallons per home each year, and saved $600 per home annually in combined water and energy utility costs.
In a resident survey reported in 2024, 86 percent of surveyed zHome residents strongly agreed that they were satisfied with their labeled home. The cited EPA passage does not provide the survey sample size, so the percentage should be retained as a survey result rather than generalized to all WaterSense homeowners.
Source: EPA, The WaterSense Current: Spring 2024.
National Water Conservation Trends Across Supply, Irrigation, and Power
USGS modeled water-use averages for the conterminous United States during water years 2010–20. The analysis covers three sectors—public supply, crop irrigation, and thermoelectric power—which USGS says represent about 90 percent of national withdrawals; withdrawals and consumption are different measures.
| Sector | Average withdrawals | Average consumed | Share of modeled three-sector withdrawals |
|---|---|---|---|
| Public supply | 35,400 million gallons/day | 4,219 million gallons/day | 14.5% |
| Crop irrigation | 105,497 million gallons/day | 75,698 million gallons/day | 43% |
| Freshwater thermoelectric power | 82,656 million gallons/day | 2,904 million gallons/day | 42.5% |
Across the three sectors, average modeled withdrawals totaled 244,817 million gallons per day during water years 2010–20. The thermoelectric pair excludes saline withdrawals in the stated result, and public-supply consumption is not the same as treated wastewater discharge.
Source: USGS, Water use across the conterminous United States, water years 2010–20.
Commercial and Institutional Water Conservation Case Studies
EPA case studies show outcomes from individual hotels, resorts, offices, hospitals, and companies. These results are observed site- or organization-specific outcomes, not representative national averages.
| Property or organization | Period | Reported outcome |
|---|---|---|
| Kalaloch Lodge, Forks, Washington | 2011–2014 | 40% less water; 1.4 million gallons saved annually |
| Hyatt Regency Atlanta, Georgia | Three years | 35% less water |
| Hilton Palacio del Rio, San Antonio, Texas | 2004–2011 | 49% less water |
| Caesars Entertainment, nationwide | 2008–2012 | 17.8% lower water-use intensity; 399 million gallons saved |
Additional EPA case-study results include the following:
- A Loveland, Colorado, neighborhood saved more than 4 million gallons per year after an irrigation audit and WaterSense-product upgrades.
- The Resort at Pelican Hill in Newport Beach, California, saved more than 48 million gallons in one year through outdoor water-efficiency efforts.
- A Holiday Inn in San Antonio saved 7 million gallons per year after installing water-efficient sanitary fixtures.
- The Westin Riverwalk Hotel in San Antonio saved more than 2.2 million gallons per year through laundry-related conservation.
- Providence St. Peter Hospital in Olympia, Washington, saved 31 million gallons over 10 years after water-efficient laboratory and medical-equipment changes.
- Granite Park office complex in Plano, Texas, saved 12.5 million gallons in one year by reducing outdoor water use.
The Caesars result combines an intensity measure with absolute gallons saved, so those two outcomes should not be treated as interchangeable. The remaining examples likewise reflect particular property sizes, operating practices, climates, and interventions.
Source: EPA, Case Studies.