Kitchen Tip: Use Your Dishwasher!

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Did you know that you can save water and electricity by using your dishwasher? I would never had believed this if it were not for a recent stumbling upon an article which said: “Doing only full loads of laundry and –this one is a surprise – using your dishwasher instead of hand-washing dishes saves water. A fully loaded dishwasher cuts the water used to do dishes.” (Gregg Horn, Living Green)

Another study put out by a U.K non-prodit organization called Waterwise found that: “the average dishwasher uses between 3 and 4.5 gallons of water per load, while hand dishwashing can use over 16 gallons.” Interesting! Not only can you use less water, but your dishes will get cleaner!

Replacing Dishwasher Soap

Another report showed that dishwashers can save water but the soap can be a problem. Most dishwasher soap includes phosphate. “Where sewage plants discharge phosphate into streams and bays, it contributes to algae blooms. When the algae dies and begins to rot, the oxidation process of decay uses up the water’s dissolved oxygen required by fish, and they suffocate as a result.”

Bio-Kleen & Seventh Generation are recommended replacements OR make your own: mix one part borax, one part baking soda and 1/4 part salt. Add white vinegar to the rinse cycle to get them squeaky clean! A reader recommended recently to use Dr. Bronner’s: “Regarding the Dr. Bronner’s liquid soaps, I use a teaspoon each of liquid soap and baking soda in the cup of my dishwasher.”

Another recipe: Mix equal parts of borax and washing soda, but increase the washing soda if your water is hard.

A few dish loading tips

  • Don’t put anything and everything into the dishwasher. Fragile glassware can chip and scratch, the finish of hand-painted china can come off, sterling silver can be stripped of its patina, wood can warp and split, cast-iron cookware and tin cups can rust, and non-dishwasher-safe plastic can melt.
  • Put plastics on top, away from the heat source, to prevent warping or melting.
  • Don’t use the prerinse cycle. Unnecessary rinsing can waste nearly 20 gallons of water per load. Just scrape off excess food before loading and let the machine do the rest.
  • Put the dirty side of dishware facing center — the water source.
  • Don’t load to the brim. Proper loading can improve how any dishwasher performs. Check the owner’s manual for loading patterns, which should be diagrammed. This will be the first question a customer service person will ask if there’s a problem with the machine.
  • Put pots and bowls face down for best pressure washing.
  • Don’t group similar utensils together. It may make it easier to put stuff away, but when like items are lumped together in the cutlery basket, they can nest and not be thoroughly cleaned. Be sure to put some items right side up and others upside down for better washing.
  • Group similarly soiled items together. For example, put your least dirty plates in one load. That way, you can use a shorter cycle.
  • Post Author

    This post was written by Lindsay who has written 770 posts on Passionate Homemaking.

    19 Responses to “Kitchen Tip: Use Your Dishwasher!”

    1. Lori Ann Sep 06, 2009 at 11:11 pm #

      I’ve always heard this too (dishwashers are more efficient than hand washing), but never been able to believe it. Like everyone else in the country where I live, we don’t have a dishwasher. 16 gallons for hand dish washing?? I scrub with a wet sponge (no running water) and rinse in a sink or bowl with mabye one gallon of water in it. And how does it use more energy? Maybe it helps that we don’t have an electric or gas water heater, just solar, so very little energy is being used. Of course, there’s just two of us, and I’ve never done a test, but it just seems so hard to believe!

    2. Kat Sep 05, 2009 at 9:21 pm #

      If you look into who funded the study, you find it was dishwasher manufacturers. I have never filled 2 sinks to the brim hand washing.

    3. Bart van Herk Aug 03, 2009 at 12:40 am #

      There is no way you will use 16 gallons doing the dishes by hand unless you leave the tap running all the time. If you use a washing up bowl it will be just over a gallon. maybe two if you like to rinse.

    4. Kerrin Mar 29, 2009 at 12:24 pm #

      Here are some details from a great resource “Raising Baby Gree” Alan Greene, M.D.
      g = annual gallons of water consumption kh = annual energy consumption

      Efficient dishwasher: 868 g 276 kh
      By hand, two basin sink: 1,419 g 295 kh
      Standard dishwasher: 1,563 g 334 kh
      Efficient dishwasher, rinsing first: 2,778 g 677 kh
      Standard dishwasher, rinsing first: 3,473 g 735 kh
      By hand, running water: 5,974 g 1,234 kh

    5. Britta Jan 13, 2009 at 9:08 pm #

      Any one using soapnuts for laundry and also dishwashing?
      Seems to be another good natural way … I’m about to try them.

    6. Sunny Olfert Jan 02, 2009 at 4:53 pm #

      I’ve been making my own dishwasher and laundry soap…detergent? ;o) for a number of months. However, I’m not happy with the results. I finally broke down and bought some detergent in the store for the clothes which I plan to use every once inawhile…the same with the dishwasher. Fortunately, Azure Standard comes to Montana, so I’ll be ordering some safe laundry and dishwasher..soap.

    7. kaia wong Oct 28, 2008 at 5:41 am #

      just tried homemade dishwashing detergent with great success!
      1/2 wine glass borax
      1/2 wine glass baking soda
      spoonful of citric acid
      about 1/2 bar grated homemade vegetable soap

      a clean wash even on the wine glasses!

    8. Stacy Aug 03, 2008 at 6:01 pm #

      Oh I recently had to figure out what it was like with out the dishwasher… its been a while :) Luckly we had a home warranty but two days with out it almost killed me

      Stacy

    9. Tchad Mar 22, 2008 at 12:04 pm #

      The debate in our house is Face-up or Face-down. The pictures in the manual always show the plates tilted with the bottom of the plates toward the bottom : in-house experimentation shows that the dirty side should lean towards the bottom. What do others think?

    10. Jasmine31 Jan 31, 2008 at 10:54 pm #

      I use mine twice a day. Glad to know I am saving money. lol

    11. Alison Jan 30, 2008 at 10:14 am #

      Lindsay,
      I first want to say I have been reading your blog for a while now and I think it rocks. I am by no means an all natural mama like you but I gotta say I love Seventh Generation dishwasher detergent. They make a powdered one in free and clear, so no funky smell or taste in plastic cups or bowls. They only problem is I gotta remember to buy it at Target that is the only place I can find it. I forget where I read it but dishwasher detergent is THE most toxic cleaner in your home. So after that I made the switch. Thanks for all the inspiration keep it up!

    12. Madeleine Jan 30, 2008 at 2:54 am #

      That is very interesting ! I always thought that using the dishwasher means using more water and especially more energy.
      So I will use the dish washer (on “save energy” level) for everything except very dirty pans that I have to handwash. Thank you!

    13. lylah ledner Jan 30, 2008 at 12:41 am #

      I love this Lindsay! It’s good enough. I also read that cancer patients should NEVER use dishwashers (in Detoxify or Die) – especially the toxic store non “green” ones.

      blessings…lylah

    14. Amy Best Jan 29, 2008 at 5:04 pm #

      What is washing soda? And do you know the purpose of salt in making a detergent?

      • Lindsay Jan 29, 2008 at 5:43 pm #

        Washing soda is actually a natural laundry boaster, but it can be used in in the dishwasher as well, as some have just used it alone. I have heard it recommended to just use washing soda for your laundry, but I have not personally tried it. You can buy it in the detergent/laundry aisle at any grocery store. Salt is a natural abrasive, so it would benefit in scrubbing the dishes fully clean. I have a friend that uses washing soda and 20 sprays of simple green for her cloth diapers…I did try it and it worked. I ran out of washing soda, so now I just use the regular detergent that I have.

    15. Andrea Jan 29, 2008 at 4:59 pm #

      I’m really enjoying reading through your blog. I found this article interesting – my dishwasher broke over a year and a half ago, and I’ve been hand washing my dishes since then. I noticed an immediate decrease in my water bill. I wonder if newer dish washers use less water; mine was only about 11 years old.

      Anyway, thanks for all of your great posts – I’m especially grateful to have found a deodorant recipe that sounds like it will work!

      Andrea

      • Lindsay Jan 29, 2008 at 5:35 pm #

        I did hear that newer dishwashers are more energy efficient now, which may cause the difference.

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