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How Green is my Laundry Powder?


How Green is my Laundry Powder?

  Ever wondered whether the laundry powder or liquid you use at home is having a negative impact on the environment? If you reuse your laundry greywater on the garden, then you will certainly have thought about it (especially if your plants have started looking sick!).

New research by Lanfax Laboratories now enables you to check out a number of laundry products for their sodium, phosphorus and sulphur content and their pH. Lanfax Labs have analysed 54 powders and 41 liquids and the results may surprise you.

Your choice of laundry detergent does make a difference to the environment, whether your wastewater goes on your garden or into the sewerage system.

Excessive levels of phosphorus in your laundry wastewater can contribute to algal blooms in rivers and waterways which receive treated sewage or sewage overflow. Phosphorus is an essential plant and animal nutrient, but it can cause waterways to become unhealthy as sewage will often contain excessive amounts of phosphorus. But if phosphorus in wastewater is discharged to land it can actually increase fertility of the soil. Plants that react badly to laundry greywater are often reacting to the sodium or high pH of the waste water or to being overwatered, rather than to the phosphorus.

Excessive sodium can make the wastewater unsuitable for use on your garden - it can starve your plants of drinking water. If you have tried putting greywater on your garden and the plants don't like it, maybe you're using an excessively sodium rich laundry product

Another thing to consider is whether you can use less of the laundry product for each wash (and still have clean clothes!). Especially if you have a front loader, you might be using more laundry powder or liquid than is necessary - and manufacturers' instructions often exaggerate the amounts you really need to use. This is particularly so when using rainwater for clothes washing.

Interestingly the Lanfax Labs research shows that powders designed for front loaders are often too high in sodium and phosphorus. Given that most front loaders will take many laundry detergents, it could be best to choose a generic powder or liquid and use a lot less of the product to reduce foaming. Another example of how helping the environment can also save you money!

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