Wednesday, December 5, 2007


I’ve been using the term “greywater” to describe the sewage effluent plus Lowry concoction coming down the purple pipes to our fields and lakes. This is not correct. Greywater is the name for domestic used water. The correct name for water with toxic chemicals in it is blackwater. Diluting blackwater with sewage effluent does not make it graywater. It’s still blackwater. “Dilution is not the solution to pollution.” From Wikipedia (new rule – always check Wikipedia first) Greywater, sometimes spelled graywater, grey water or gray water and also known as sullage, is non-industrial wastewater generated from domestic processes such as washing dishes, laundry and bathing. Greywater comprises 50-80% of residential wastewater. Greywater is distinct from blackwater in the amount and composition of its chemical and biological contaminants (from feces or toxic chemicals). Greywater gets its name from its cloudy appearance and from its status as being neither fresh (white water from groundwater or potable water), nor heavily polluted (blackwater).


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