Danner has great boots for all different applications. You can get their police boots with steel shanks/toes if that's what you need. They fit great, and last forever.

Another great work boot company is Mason. They specialize in fitting odd sizes/shapes of feet, and also have a very durable product.

Another thing you may want to consider (but only if you don't mind a cowboy-style boot) are Justin Workboots. They're very comfortable and "cushy," but are also made to resist popular industrial chemicals.