If I had to drink it, first it would be filtered using my Katadyn Hiker and then boiled. If given a choice I would not drink it at all. You stated the puddle was along a logging road. I would be worried about chemical pollutants from vehicles or from loggers dumping or spilling stuff too. Even if there are tad poles, frogs do not always know the difference of what it safe or unsafe places to lay eggs or swim in. The tad poles are still in their infancy stages, so any harmful stuff in the water may not have had a chance to effect them yet.