87 million U.S. homes have dishwashers

My current dishwashing detergent is 4.5% phosphorus, which translates to 0.72 grams of phosphorus per tablespoon. My dishwasher at home requires approximately 4 tablespoons of detergent to fill its reservoir. That means I’m adding 2.9 grams of phosphorus to the environment with each load of dishes I do.

If the 87 million dishwashers in the U.S. were filled with the same detergent as mine and were run at the same time, just once, it would equal approximately 338 TONS of phosphorus. That is an awful lot of phosphorus.

How often do you run your dishwasher? I run mine almost every day! The detergent I’m using has the lowest phosphorus content of any I could find at my grocery store. Brands with zero phosphorus content exist, but I’ll have to hunt around to find them. I might even have to purchase my detergent via mail-order. That’s a lot of work to find a phosphorus-free detergent, but after looking at these numbers, it’ll be worth the effort.

Tony Thorpe

Phosphorus Content of Major Dishwashing Detergents

  Palmolive Tablets  
8.7%
  Electra-Sol Tablets  
8.7%
  Sunlight Tablets  
8.7%
  Cascade Complete Tablets  
8.7%
  Spot-Free Powder (Wal-Mart)  
7.0%
  Electra-Sol Powder  
6.1%
  All  
5.1%
  Electra-Sol Gel  
4.9%
  Sunlight Powder  
4.5%
  Cascade PureRinse  
4.4%
  Cascade Complete (liquid)  
4.0%
  Palmolive Gel  
1.6%

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