Earlier quoted context omitted.
Depends on the area, or so I learned recently upon moving to Montana, where they don't recycle it. Apparently most recycled glass is crushed up and used as roadbase. In MT, gravel is dirt cheap, and so it's not economical to use glass for construction, so into the landfill it goes. As for recycling glass into other glass, I can't say.
Making glass from scratch is incredibly energy intensive, and glass impurities can be handled (purified), so it always makes sense to recycle glass. Don't let your officials tell you any different.
Also glass is very heavy when compared to a similar strength container made of plastic. That is why plastic took over the market.