A Little salt never hurt most feshwater fish. Actually a little salt does them some good, As long as its just salt. I have seen some borrow pits around me that get salt water on high water events and are at or around 10 PPT and the freshwatrer fish do great. 10 ppt is actually a lot of salt, sea water is about 30 ppt.
Ditto. In my non-aquponics systems I keep my salinity at 2 ppt (0.2 % or 2000 ppm/mg) to my recirculating tank systems to reduce stress and go to 5 ppt for hauling to help with stress their.
I doubt ponds would get even as high as this from road salt but could be wrong.
I do remember once stopping at a restaurant on the 80/90 turnpike New York and the restaurant did not offer water as they said their wells were contaminated with road salt. I'm guessing it was a precaution that went overboard by government bureaucrats just like a lot of things out there. A contracter probably made a pretty penny installing a system to remove the salt. I wouldn't be surprised if a water softener leaves more salt in the water!
If people would just be more well informed in this country and use science instead of hyperbole we'd all live easier.
