For men, can any natural body of water (e.g., pond, river) be used as a Mikveh? Can such a body of water also be used for Kelim/utensils as well?
Answer:
Certainly. A natural body of water (containing 40 se'ah of water) is an ideal mikvah for men, where it is filled by spring water or by rain water. It can likewise be used for utensils.
Best wishes.