How can I prevent my dishwasher drain from emptying into the sink?

You can prevent your dishwasher drain from emptying into the sink by ensuring that the dishwasher drain hose is properly connected to the Plumbing system under the sink and that there are no clogs or blockages in the hose or drain pipe. Additionally, installing a high loop in the drain hose or using an air gap device can help prevent backflow of water into the sink.