Aerating the water will help, ozone injection would be better. Depending on the strength of the solution, most likely H2S, it ought to be okay to drink, but I'd have to see the lab results to know for sure.

Yellowstone smells like that at pretty near every water hole.

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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)