How many levels are there in HL2?

[westie]

So how many levels i just finished the Hazardous waters one and it sorta feels like there is nothing more to add like im near the end even though i know im not. So i was just wandering how many levels ther are?
People who have the Strat guides should be able to tell me.

 

[VaPorZ]

14 chapters total, as seen when you select "new game"