Household · official-source review · reviewed 2026-10-26
The dishwasher argument is usually about dishes, but the water count is easier to settle than the argument.
Compare yearly water from a dishwasher and from hand washing with your own loads, gallons, and water price.
Anyone deciding how to wash dishes in a household where water use or a water bill matters.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Count one normal week of dishwasher loads. Use that number for the year.
Use the water per cycle from the manual or the WaterSense listing for the model.
Fill the sink once and count the gallons. Or time the tap and multiply by the flow rate.
Take the price per 1,000 gallons from your water bill, including sewer if it is charged that way.
The App shows both yearly totals and the water cost difference.
Five loads a week at 4 gallons each uses 1,040 gallons a year. Hand washing at 15 gallons a load uses 3,900, so the difference is 2,860 gallons and $34.32.
Use your own source and details. The example is not a record about a real person or organization.
The same comparison at two load counts. Both are examples.
Both cases are examples, not records about a real person. The bars show the same numbers the free App computes.
U.S. Environmental Protection Agency, WaterSense · reviewed 2026-10-26
What this source supports: WaterSense publishes water-efficiency guidance and fixture specifications for homes and workplaces.
Source limit: Household water rates and fixture models differ. Use your own utility bill and fixture documentation.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This guide compares the gallons you enter. It does not measure your machine, your sink, or your utility rate.
Household water rates and fixture models differ. Use your own utility bill and fixture documentation.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Compare yearly dishwasher and hand-wash water use at your own loads and prices.
This App compares the gallons you enter. It does not measure the appliance, the tap, or your water bill.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Compare yearly dishwasher and hand-wash water use at your own loads and prices.
Free · no account · no upload
Open Dishwasher vs Hand-Wash WaterThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Dishwasher vs Hand-Wash Water. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.