We have been swimming in our pond since it was built five yrs ago. No problems so far. I’m not sure what the difference would be in swimming in a pond or a large lake. The Lake of the Ozarks has thousands and thousands of septic tanks that have to be leaking into the lake. My fish are using it for their bathroom, my grandkids probably do too. I’ve never bothered to test the water, but I do tell the grandkids not to drink it.


9 yr old pond, 1 ac, 15' deep.
RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these.
I think that's about all I should put in my little pond.
Otter attack in 2023