blackwater

2 definitions • 4 examples

water that comes from toilets and other uses that is not clean and cannot be used again :

Black water from the toilet is kept separately from the remaining waste water, grey water.

I will empty the waste tanks and restart the black water tank.

water in rivers and swamps (= areas of wet land) that is dark in colour because it contains matter from dead plants:

You may find them at other black water wetland areas as well.

Cuyabeno is a region of wet tropical forests crossed by seasonal blackwater creeks and rivers.