Its not that bad with the regular search results. Sometimes porn makes it to the first result page, usually its on the second or later.

The real problem is when searching for images. I recently had to search for a lot of images and for basically any search term I entered DDG was able to find porn. Ultimately, this made me switch back to Google since constantly having to risk showing NSFW results on your workplace in an open plan office isn't exactly a great experience.

I'm now using Google at work, Ecosia on my mobile phone and DDG/Google on my PC/Mac.