As someone else said well water can vary so much, unless you test it regularly you can never be sure what could be in it. City water is tested on a regular basis, plus of course all the nasty tasting chlorine in it. My first country home had an artisian well and the water was perfect, tasted great, had it tested and it was perfect. The place I have lived for 25 years here has awful well water, I could never drink it, although it tested safe to drink when we bought the place, it was so full of iron it ruined my appliances and stained my tub. Now I have city water and love it, but still don't drink it cause of the chlorinne. Filters will not get rid of all bacteria, that's why I still wouldn't give well water to an infant or someone with a lower immune system, why take chances. You can also boil the water before you give it do your dog, that will kill any bacteria. |