I live in the Southern Tier of upstate New York. They use lots of salt on the roads. I understand that the EPA requires that car washes recycle their water. I can understand filtering oil and dirt but I don't understand how car washes can filter salt. Salt filtration plants cost billions. Do you think it's a waste of time to wash your car at a car wash in places that use salt on the roads?

I grew up in Niagara Falls. Yes, if they reuse water that way, I would not use them, they will not get rid of the salt without such expensive equipment I doubt they have. But you could sample the water and have it tested

I think that I will sample the water in March so that the salt can work it's way into the system.