What does the liquid waste holding tank primarily contain?

The liquid waste holding tank primarily contains grey water, which is wastewater generated from sources like sinks, showers, and dishwashers, excluding toilet waste. Grey water is typically less contaminated than black water, which comes from toilets and contains solid waste. The primary function of the liquid waste holding tank is to collect and store this grey water until it can be properly disposed of or treated, ensuring that it does not contaminate the environment.

Fresh water, solid waste water, and potable water are not appropriate for holding tanks designed for liquid waste management. Fresh water is used for drinking and cooking, solid waste water refers to the contents of toilets, and potable water is safe for consumption.