Meet the Expert

How Much Water Does a Dishwasher Use?

Using a dishwasher does save water.

“Older dishwasher models may use as much as 15 gallons of waterbut that’s still less than handwashing.

Overhead shot of an open dishwasher

Nick David / Getty Images

How Much Water Does a Dishwasher Save?

She explains that using a dishwasher nightly saves more than 100 gallons of water per week.

That can total up to more than 5,000 gallons of water saved per year.

Why Are Dishwashers More Efficient?

A dishwasher cleans dishes and utensils at the same time without wasting any water, explains Tompson.

Why Is Handwashing Inefficient?

On the other hand, handwashing is often highly ineffective and inefficient, Klien says.

Most of us keep thehot waterrunning while washing and rinsing dishes to keep our sink warm and hands comfortable.

Do You Need a New Dishwasher to Save Water?

You don’t necessarily need to buy anew dishwasherjust to save water.

Older models can also be more efficient than handwashing, Tompson says.

The math surrounding more energy-efficient machines cant be ignored.

Energy Starcertified dishwashers use less than four gallons of water in an entire cycle, Eberhard says.

Tips to Make Your Dishwasher More Efficient

Running a dishwasher daily may reduce theappliance’s longevity.

However, using the dishwasher every day can save more water than handwashing dishes every day.

Local utilities recommend avoiding heavy usage of energy at certain times of the day.

says Whirlpool’s Sadler.

How Much Water Do You Use At Home?USGS.