So sorry to hear about your girl! First... I'm a bit confused that you said she "drank" all her water, because toads do not drink. They absorb water through their skin and it would be hard to determine what was absorbed, since your city declared a water boil advisory and you do not know specifically what the contamination is. Regardless, I am reluctant to believe that the water has anything to do with her condition, especially if you boiled it as directed.... unless there is something really toxic in it??? It may just be coincidental??? What has me worried is that I had an American Toad display the exact same symptoms that you are describing, a few months ago and he did not survive! I had performed a dissection/autopsy, which revealed that he had an impaction, which I was not able to detect upon physical examination. At that time, I was not aware of using warm/tepid honey water to aid in loosening up impactions. I am curious if your girl could possibly have an impaction? Are you aware of or have you ever used honey water? It will help keep her hydrated, may loosen impaction and possibly help her expel any nasty substances that she may have absorbed from the water. It definitely will not hurt her and is worth a shot. Depending on where the impaction is... if it is pressing on the spinal cord, it will cause the splaying of the hind legs. It is unclear to me why/how it causes the downward ducking of her nose, but my boy did the same thing and I thought it was very odd behavior. Also wondering... have you been using UVB lighting and/or powdered supplements and what do you normally feed her and how often? Really hoping she improves for you!