Answer:
Drain it while wearing gloves and protective gear.
Step-by-step explanation:
Dirty mop water contains all the dirt from the cleaning. It can have dangerous microorganisms maybe the next Covid variant. You take the mop water and slowly drain it to prevent splashing. Do not put it in areas used to clean like the sink or bathtub. Do not harm natural environment by pouring it into a fish pond. Pour it into the drain or open sewer.