What exactly is the grey water footprint of a product is?

What exactly is the grey water footprint of a product is and how can it be evaluated? How the correct dilution factor is estimated?

3 Answers

1. French Tout dépend de l'origine et de la provenance de ces eaux grises. Celles ci sont très souvent polluées par des produits contenant des micros polluant chimiques qui réagissent au contact de l'oxygène. Le regroupement des eaux grises est aussi un facteur d'augmentation de leur toxicité. Un exemple très révélateur. Une machine à laver le linge bloqué durant trois/quatres jours pleine d'eau et de linge. Au bout de ces trois/quatres jours l'eau est putride à un niveau très élevée. English It all depends on the origin and the source of the gray water. These are very often contaminated with products containing hazardous chemicals microphones that react with oxygen. The grouping of gray water is also an increase in toxicity factor. A very telling example. A washing machine clothes stuck for three / four days full of water and tumble. After these three / four days the water is at a very high putrid level.

2. Thank you Markus - I appreciate the quick reply. I am going to have a look right now. George

3. Dear George Skouteris, I recommend that you take a look at these materials: Franke, N.A., Boyacioglu, H. and Hoekstra, A.Y. (2013) Grey water footprint accounting: Tier 1 supporting guidelines, Value of Water Research Report Series No. 65, UNESCO-IHE, Delft, the Netherlands. available at: www.waterfootprint.org/Reports/Report65-GreyWaterFootprint-Guidelines.pdf Franke, N. and Mathews, R. (2013). Grey Water Footprint Indicator of Water Pollution in the Production of Organic vs. Conventional Cotton in India. available at: www.waterfootprint.org/Reports/Grey%20WF%20Phase%20II%20Final%20Report_Formatted%2006.08.2013.pdf Kind regards, Markus