Is It Safe to Drink from Refilled Water Bottles?

If you’ve ever wondered if it’s safe to drink from refilled water bottles, the answer is both ‘yes’ and ‘no.’ Reusing 16- and 20-ounce water bottles can be safe if you have a bottle brush, and wash them thoroughly with soap and water before you refill them. Reusing water bottles is not safe if fluid is stored in too long and mold forms. At that point, you’ll want to liquidate your water bottles into the recycling bin.