Pond Boss Forums Thread Like Summary - Will Treated Pilings harm my fish

We have a small pond (roughly 12,000 sqft) and I'm building a dock for it. It's going to be very basic 12'X6' with 3 pilings on each side

I just realized, is there something I need to treat the treated wood pilings with (or all the treated lumber) so that the chemicals in the wood do not harm my fish?

I searched the forum and surprisingly couldn't find anything about this but I'm sure there's something on here and I just missed it

Thanks for your input

I would hazard a guess that a typical pond in North America takes in more pollutants from the atmosphere in one year than would ever be
released from a few treated posts holding up a dock.

Is using treated wood in a fish pond ideal? Probably not.

Is it going to kill everything in the pond and give you cancer if you eat a fish? Probably not.

As the saying goes, "The solution to pollution is dilution." A way to find out is to look and see what amount is used to treat the wood then you might be able to find out what amount is leached out over time.

Personally? I would use them and not give it a 2nd thought.

I think anything less then 15 20 yrs old should be fine, now I do know back in the day they used some pretty harsh chemicals to treat wood like creosote and supposedly there's arsenic in it but in today's world I think most of the really harmful chemicals have been outlawed. I wouldn't be too afraid of the new stuff, actually barely enough stuff in them to keep the post from rotting.