Too many internet retards here giving bad advice. One more time then I'm out. Cut off the rod, add a "splash" of chlorine, then reinstall the plug and enjoy non-stinky water. Reinvent the wheel or ruin your septic with 12 cups of bleach if you choose to. You know what to do. Good luck.
Damn, you're right, I forgot about the septic. You'd have to purge so it doesn't go into the septic. My experience with this is super chlorination a larger system that had Legionnaires disease in it.
