Final answer:
In a dental setting, liquid waste should be collected in a designated container for hazardous waste to prevent environmental pollution and water contamination.
Step-by-step explanation:
In a dental setting, the guidelines for disposing of liquid waste involve collecting it in a designated container for hazardous waste.
This ensures that the waste is properly managed and does not contribute to environmental pollution.
Chemicals should not be disposed of down the sink to prevent water contamination.