Greywater contains far less nitrogen than
Nine-tenths of the nitrogen contained in combined wastewater deriveves from toilet wastes (i.e., from the blackwater). Nitrogen is one of the most serious and difficult-to-remove pollutants affecting our potential drinking water supply.
Greywater contains far fewer pathogens
Medical and public health professionals view feces as the most significant source of human pathogens. Keeping toilet wastes out of the wastewater stream dramatically reduces the danger of spreading such organisms via water.
Greywater decomposes much faster than
The implication of the more rapid decomposition of greywater pollutants is the quicker stabilization and therefore enhanced prevention of water pollution.
(see graphs Fig 2. & 3.).
Greywater pollution -- summary of scientific data
Planning a greywater system
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