| It depends on how ionized the copper is (CU, CU+, CU++). It also depends on the alkalinity of the water. At high alkalinity or high pH copper is much less toxic. They put copper sulfate in our fish feed as a necessary trace element. At much higher doses, that same copper sulfate is a piscicide. Then they deliver our water through copper pipes. It is pretty hard to predict.
Don, did the techie say what form the copper would be in? If it is a precipitate containing bound copper there is not much chance it would hurt - especially with your water. If it is highly ionized copper which is looking for a reaction site then there is more potential for harm.
-steve |