Distilled water is pretty cheap to buy, but it comes in plastic bottles. I’m trying to avoid plastic as much as possible (see use10percentless.com) so I scoured around for simple ways to make distilled water at home, using just things already available at home. In this case, I’m using the distilled water as a base for car windscreen washer fluid which also usually comes in plastic bottles (and with a bunch of chemicals). So I’m avoiding two sets of plastic bottles.
Here’s how I make distilled water at home.