If 1 teaspoon of salt pollutes 5 gallons of water to toxic levels, does this mean that even iodized salt used for cooking results in environmental damage?

Question

I try to be as environmentally friendly as possible in daily life. Today I learned about the effects of salt on freshwater and how wastewater treatment plants are not capable of removing salt and chloride from water which results in it being dumped into rivers, lakes, etc and affecting aquatic life. Is this specific types of salt or is this any type of salt including iodized salt used for cooking?

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Answer 1

Table/cooking salt may or may not be iodised. That just means it does or doesn’t have iodine added to it; it doesn’t change anything about how the salt interacts with water or the organisms that consume the water or live in it.