For ease of cleanup, install the dishwasher within thirty six inches of one edge of the sink and allow for at least twenty one inches of standing room next to it. It is nice to leave that space between the sink and dishwasher to allow yourself to step and bend to load and unload. When a dishwasher is immediately next to a sink back strain may result. twenty one inches is also conveniently
a good width for a pull out waste bin. This setup allows you to easily scrape, rinse and load dishes.