I have been using the Glass Lixit Bottles for well over a year now and never had a problem with them. BUT, I still check them every morning and first thing when I get home from work just to be safe.
To check them, I just take my finger and push on the little ball thingy inside the drinking tube. If water comes out with no problem then all is good!
The Glass Lixit Bottles are $8.00 plus shipping. Petco used to carry them, but I havent seen them in awhile.