It is a false statement that "Blackwater is cheaper and easier to process than greywater."
What is black water and grey water?
The term black water refers to waste water that emanates from the sewers such as from bathrooms, kitchens, toilets etc. Grey water is water that is obtained from sinks and from the washing machine which is less in pathogen content.
It is easier to treat grey water than black water since grey water contains less microbial load than grey water.
Learn more about water treatment: https://brainly.com/question/1414153
