Water Disposal from E-tank Using Stainless Anodes?

I had about a dozen pieces I e-tanked using a stainless steel cylinder as an anode. Now I have to dispose of the water and I'm reading some conflicting information regarding the use of ss anodes. What's the safest way to dispose this water? Thanks for all responses.
 
Why do you have to dispose of the water solution? Can you put a lid on the container and keep it for future use?

Did you use the laundry booster to create the electrolyte? If so it's only 2 Tbsp/gal. Not all that strong. Dilute more and even if you have a septic system, should be ok.

My etank is a 44 gal trash can in a fenced area, so I just put the lid on it when I'm finished. When solution evaporates, add more water and booster. Think the only time I have changed the water is when I went from a 30 gal. trash can to the 44 gal.
 
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