Treated tap water is not dangerous (If you do not get into it).
is drinking distilled water harm full for humans
You Can harm soil by giving it to much water
YeS
By polluting it.
No rust in a horse's water does not harm the horses. Our horses have rusty water and they in perfect health.
think of it your self
No. tap water will not even harm it.
water by itself is harmless, but minerals in water can have an effect on teeth.
No
with diseases
I like you
Not at all