Zero-Discharge Systems (Aerobic Biofilter/Composting Toilet and Graywater System):
Separating flows at the source for easier management
site conditions are very restrictive, clients have elected an ecological source
separated system whereby blackwater (anything that leaves the toilet) is managed
in an aerobic system that's kept separate from graywater (water used for washing).
This system has received approvals throughout the country. Composting toilets
and aerobic biofilters--with a waterless or microflush toilet--can be used to
manage blackwater, the source of most nutrients and potential pathogens in wastewater.
Graywater, which poses far less of a pathogen risk and offers a high volume of
water for plant irrigation, is managed separately in a planted system.
a composting toilet qualifies the building owner for a smaller leachfield, a cost
The rationale: Why dispose of valuable water
when it can be grown away with your landscaping?
here to download a factsheet about one such
installation for a residence.