Dish Washing vs hand-washing: Which is more water-efficient?

This may come as a surprise, but using a dishwasher is scientifically proven to be more Earth-friendly than hand-washing.

Read on to know why.

Yes! you read it right.

Using a dishwasher is more environment-friendly. If you’re using a newer model, that is. Today’s advancement in technology allowed for the robust engineering of dishwashers that are highly efficient and green. You’re greatly missing out on helping Mother Earth if you’re still washing with sponges when you can have a greener lifestyle by using water-saving and energy-saving dishwashers.




Water usage of dishwashers

People can easily conclude that using a dishwasher is heavy on water-use, but the truth is the exact opposite. According to studies, newer models of dishwashers use less water than good old hand washing.

When handwashing dishes, people end up using as much as 27 gallons. Yes, a whopping waste of 27 gallons of water. And that is just in one load.

On the other hand, today’s dishwashers with Energy Star certification only use 3 gallons per load. This is based on the study of the Natural Resources Defense Council. If you’d use an Energy Star certified dishwasher, you’d save as much as 5,000 gallons of water a year. And that is quite a lot.

You don’t need to be a math genius to see the difference between the 27 gallons of water that hand washing entails and the 3 gallons of water that modern dishwashers need. Please do the math.

For your dishwasher to be capable of huge water-saving, it has to follow 2013’s water load standard of 5 gallons per load. If you have one built before 1994, it does not save water. It can even waste as much as 10 gallons of water per load.

The energy-saving ability of dishwashers

Dishwashers also save energy. It may be harder to believe that, but it’s true. You see, you need more energy whenever you hand wash because your water heater provides hot water for you. That alone consumes energy.

That is not the case with dishwashers. New models of dishwashers come with heaters that can easily warm up the water. As it comes built-in, no extra energy consumption is necessary. This makes today’s dishwashers more energy-efficient than good old dishwashing. And, if it’s an Energy Star certified model, it will certainly use only half of the energy consumption needed when you hand wash your dishes.

Never rinse by hand

Please don’t even rinse your dishes before placing them in your dishwasher. That act is extremely wasteful. Consumer Reports shared that pre-rinsing is to blame for the waste of 6,000 gallons of water per household annually. This should never be the case. You should know that new dishwasher models can manage bits of food. You need not worry and wastewater in the process by pre-rinsing. As long as you scrape off big stuff off your plate and dishware, your dishwasher will efficiently and perfectly clean your dishes for you.

CAUTION: Always be on full load

You need to take note though that these computations only apply to fully loaded dishwashers. If you can’t fill it up in a day, you should use your dishwasher’s rinse and hold feature. That is if it has one. A rinse and hold feature will prevent food from drying and sticking to your dishware while you wait to have a full load. Using your dishwasher when it’s not fully loaded is extremely wasteful. Always wait for enough dirty dishware to ensure the efficient use of water and energy.

PRO TIPS: For people who are looking for a dishwasher

If you’re looking to buy an Energy Star certified dishwasher, do take note of the following features and considerations:

  1. Your dishwasher should be adjustable. It should have extra racks and aids for loading.
  2. It’s best if your dishwasher will have a soil sensor.
  3. As mentioned earlier, opt for one with a rinse/hold cycle. This feature is extra handy if it takes a while for your household to fill a dishwasher.
  4. Your dishwasher should have specialized wash zones.
  5. Your dishwasher should have a smart filtering system.
  6. Opt for a stainless steel tub.
  7. Look for one that offers features for heated drying.
  8. Your dishwasher should have features for odor control.
  9. Consider its noise level.
  10. Your dishwasher should have clear provisions on its energy usage.
  11. This is a bonus tip, but do consider its exterior look. It wouldn’t hurt if you’d consider an Energy Star certified dishwasher that fits the overall aesthetic of your kitchen.

If you want experts to help you in choosing the best water-saving and energy-efficient dishwasher for you, you should contact Warewashing Solutions. Warewashing Solutions offers the best high-quality brands of dishwashers together with commercial dishwashers Australia, sterilizers, and cleaning solutions.

For people on the fence

So, you’re still not convinced that dishwashers are more environment-friendly eh? Well, just consider this: for water to be capable of effective sanitizing, it has to reach a temperature level of 140 to 145 degrees Fahrenheit or 60 to 62.7 degrees Celsius. Your hands simply won’t be able to handle that.

And assuming that you care about the environment, you also wouldn’t want to turn your water heater to that level as well every time you wash the dishes. So why stress and waste energy and water in the process? Opt for an Energy Star certified dishwasher. You’d save so much time and effort as you won’t need to wash the dishes anymore and you’d also save so much energy and water.


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