black water
Toilet drainage effluent
Black water is wastewater containing human waste—sewage from toilets, as distinguished from gray water (from sinks and showers).
The term also describes the dark, tannic water found in swamps and slow-moving rivers, stained by decomposing vegetation: The canoe drifted through black water beneath the cypress trees.
In boating, black water refers to the holding tank contents.
Immeasurably profound depth
- fathomNautical depth unit
- oceanic trenchDeepest seafloor depression
- submarineUnderwater naval craft
- bathyscapheSelf-propelled deep-diving craft
sonar · pressure · darkness · brine · pelagic · benthic · hydrothermal vent · submersible
Liquid refuse in drains
- effluentDischarged liquid waste
- wastewaterContaminated drainage from buildings
- fecal matterSolid intestinal waste
- pathogensDisease-causing microorganisms
bacteria · toxins · discharge · leachate · industrial waste · heavy metals · biohazard · sanitation
Something hard to fathom
- unknownNot yet discovered
- secretsConcealed information
- shadowsDark areas from blocked light
- darknessTotal absence of light
suspense · eerie · haunting · foreboding · ominous · supernatural · occult · cryptic
Source of potential harm
- penalty strokeAdded shot for infractions
- out-of-boundsBeyond permitted boundaries
- pondSmall still body
- drop zoneDesignated touchdown area
abyss
Immeasurably profound depth
- fathomNautical depth unit
- oceanic trenchDeepest seafloor depression
- submarineUnderwater naval craft
bathyscaphe · sonar · pressure · darkness · brine · pelagic · benthic · hydrothermal vent · submersible · midnight zone
sewage
Liquid refuse in drains
- effluentDischarged liquid waste
- wastewaterContaminated drainage from buildings
- fecal matterSolid intestinal waste
pathogens · bacteria · toxins · discharge · leachate · industrial waste · heavy metals · biohazard · sanitation · septic
enigma
Something hard to fathom
darkness · suspense · eerie · haunting · foreboding · ominous · supernatural · occult · cryptic · hidden depths
hazard
Source of potential harm
- penalty strokeAdded shot for infractions
- out-of-boundsBeyond permitted boundaries
- pondSmall still body
drop zone · lost ball · penalty area · risk-reward · approach shot
- sanitationsewage, sewers, cleaning, sewer, disinfecting
- RVingmotorhomes, campgrounds, RV parks, campsites, boondocking
- ship pollutionengine exhaust, exhaust gases, nitrogen oxides, smokestack emissions, soot
- coal processingwashery, clean coal, crushing, screening, sizing
- septic systemsseptic tank, drain field, leach field, effluent, sludge
- holiday parkscaravan, caravan parks, campsites, chalets, mobile home
black watergreywater
Light household wastewater
gray water · potable water · clean water · clear water · white water
black waterpotable water
Liquid safe for consumption
drinking water · clean water · pure water · fresh water · purified water
black, water, blacks, blacker, blackest, blacken, blackened, blackening, blackish