Can we toivel keilim in the lake in Prospect Park?
I am not sure how the lake is;
If it’s flowing – it must not stem from rainwater. Pipes through which water passes can also invalidate the water. Even if the river originated from a spring, it often increases due to rain water or melted snow.
If it’s stagnant – not flowing – even if it originates from rainwater, it is kosher.
In addition if there is any filtering, as it seems like is the case in the Prospect Park lake. It would be an issue too.
#8661
See also:
Is a brook or lake kosher for toveling utensils? There is no other mikvah in my area.