Assertion: septic tank's wastewater | /r/Synonym | black water
Facets:
Source sentences:
text: Wastewater from toilets is called "black water" and wastewater from sinks is called "graywater"
text: Wastewater from toilets is called "black water" and wastewater from sinks is called "graywater" A septic tank or sewage treatment tank which retains solid waste, letting liquid waste flow to an onsite disposal system.