Use the washer output as greywater. Eg, http://oasisdesign.net/greywater/laundry/ http://oasisdesign.net/greywater/laundry/ . Or change to Japanese-style bathin

Use the washer output as greywater. Eg, http://oasisdesign.net/greywater/laundry/ http://oasisdesign.net/greywater/laundry/ . Or change to Japanese-style bathing customs and use tub water as input to the machine, as in http://www.survivingnjapan.com/2011/02/how-to-use-hotwarm-water-in-japanese.html http://www.survivingnjapan.com/2011/02/how-to-use-hotwarm-wa... . That also says there are high-end washing machines which filter an re-use the water.