You know I've never really looked for Bacteriostatic water at a drug store, I'm not sure if they have it, or not. I order it online. Just do a google search for it, and you'll find it's readily available in 30mL jugs.
However, from goodrx.com it looks like Bac water is available at local pharmacies. Go to the link and enter in your zip code, and it will tell you what pharmacies have it.
Bacteriostatic Water Prices and Bacteriostatic Water Coupons - GoodRx